- At a Christmas concert in New York City on December 14, 2007, Joe’s hair was set on fire by fireworks.
- Joe has a pug dog, whose name is Sokka.
- Joe's favorite non-english speaking country is Japan.
- Joe has a tattoo that represents his favorite band The Smiths.
- Joe played guitar on the Cobra Starship songs Church Of Hot Addiction and Pop Punk Is Sooooo ‘05 from the 2006 album While The City Sleeps, We Rule The Streets.
- While attending Chagrin Falls School in South Russel, Ohio, Joe played the trombone in the school band. He did not pick up the guitar until some years later in secondary school.
- Joe earned his nickname Trohmania due to when he performed his classic spin and hit Pete Wentz in the face. And because of that, Pete had to get a few stiches.
- Joe's signature guitar move is called "Tromania". It is seen in a few of Fall Out Boy's videos. For example, in This Ain't A Scene, It's An Arms Race, in the scene where FOB is in the recording studio, he performs the stunt and knocks a bottle down.
- Joe has a fan base that call themselves Trohmaniacs.
- One of the first albums Joe bought was Metallica’s “…And Justice For All.”
- Joe toured with the band Arma during the summer when he was 16.
- Joe is one of the guitarists who personally autographed a guitar to be sold at Target stores.
- Joe was once paid twenty dollars to sleep in a dog cage.
- Joe once acted as Pete's chauffer when he had his liscense suspended.
- Joe is the only member of FOB who is not a vegetarian or a vegan, though he used to be.
- Joe is the only member of Fall Out Boy not originally from the Midwest.
- Joe and Pete Wentz were friends before being in Fall Out Boy.
- Joe said he used to be a vegetarian, until he found himself in a Dairy Queen parking lot. He couldn't resist eating the food. He is no longer a vegetarian.
- Joe met Patrick Stump at Borders in Chicago. They discovered they shared an interest in a band, which is how they started talking to later become friends. Though before getting to know Patrick, Joe didn't exactly care to get to know him.
- Joe is the tallest member of Fall Out Boy.
- Besides being credited as the dude who started Fall Out Boy, Joe is also credited as the only Jewish member of Fall Out Boy.
- Joe is the only member of Fall Out Boy who isn't straight laced.
- Joe is a "Star Wars" fan.
- A very well-known nickname for him: Trohmania.
- Joe is the youngest member of Fall Out Boy.
- Joe: (on his hair catching on fire at a 2007 Christmas concert) There was so much pyro(technics) on stage that I lit my hair on fire, which in turn made me feel the power that the gods of rock bestowed upon us, and I proceeded to head bang.
- Joe: (upon answering the question of what was his favorite gift he ever recieved was) You know the best gift that I've ever recieved, other than the gift of happiness, and joy, and the pleasure of other fine men, and women, and dogs, and cats, would be um... I don't know. For my bar mitzvah I got a lot of money which I used to buy my first guitar rig. So that was easliy my favorite gift.
- Joe: I really like Morrissey. I really wanna kiss Morrisey.
- Joe:(on Pete Wentz) The moment you meet him you're like 'this dude's famous,' whether a million people know it or no one knows it. The first time I met him, when I was like 16, I was like 'this is a dude I want to know.' He just has a magnetic personality. And I think there's something kind of cool about the front man of our band being the bassist who doesn't sing.
- Joe: (On the tour with Arma Angelus’ Pete Wentz and Andy Hurley when he was only sixteen) I definitely got initiated on that tour they would rip my underwear off me everyday. I hated it, dude. I should have stopped wearing underwear.
- Joe: (about buying a guitar that cost $4,500) I’m gonna feel guilty about this for a while. It’s the Jew in me – like, “Oh, no, you spent money!”
- Joe: Middle-aged women love me – they say I look like Dr. McSexy or whatever his name is.
- Joe: (on the lack of attention he and Andy Hurley get) We mean a lot to each other as musicians and people, but sometimes we start believing what people write about us: The band is just one guy or two guys. That can be harsh for the soul.
- Joe: For me, the more money I get, the more I freak out.
