1 definition by Mainstream Fuckboi

1. The act of having sex on a bicycle
2. When a girl buts her ass in your face while you finger her.
3. When a girl grabs on to your dick and doesn't let go.
Sanders got handlebarred by Tyson last night!!!

I handlebarred the hell out of her. I'm pretty sure she got tire grease all over her ass.

She said she was wanking me, but it seemed like she was just handlebarring me .
by Mainstream Fuckboi October 25, 2015
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