I was 18, so when my friends were going into the bar, I was too young to get in. I figured I might be able to sneak in another entrance, so I walked around back and looked for another door. Behind the building, I found the bike, which for some reason was branded with the Tim Horton's logo (the nearest Tim Horton's was more than two blocks away). I figured, "hey, I'd like to go for a bike ride," and so I grabbed the bike and started riding.
I went around the town I was in, driving up the nearby highway and through the university campus, spending about a half-hour to an hour just riding it around, until I realized "hey, maybe I shouldn't be doing this." So I rode the bike back to the bar, put it back where I found it, and walked back to my dorm.
I'm actually quite surprised I didn't end up getting caught, because I was not very careful at sneaking around with it. But there's how I drunkenly stole (and eventually returned) that bike.