Denting the bumper 

Covertly feeling a womens ass without her acknowledgement, or awareness;can be done while passing each other in a crowded area, train, or in a small space

With such a large number of sexy, and foxy women around it's not very difficult to see a guy denting the bumper.

Denting the bumper by SavetheGiraffes November 16, 2005

Welding the bumper 

When a guy has sexual urges and decides it's time to relieve the stress. Also known as masturbating

Hey do you know where Cass went?
He's probably Welding the Bumper

Welding the bumper by Brandt1dudes January 26, 2017

Butt Bumper 

A Butt Bumper is a guy that screws around. He is a bumper of butts, Also used to describe a gay guy. Like hey look at the Butt Bumper over there talking to his boy friend, Butt Bumper. Also meaning a person that procrastinates Example hey dude you need to hire someone else this dude is a serious Butt Bumper. Also A Butt Head

Butt Bumper,

Butt Bumper by Daman Money January 25, 2010

blubber bumper 

1. A person who commits a sexual act with an overweight person.

2. A fat loving sicko

Dustin: Oh look at her! I'd tap that.

Mitch: Dude that chick is huge! You're such a blubber bumper!

blubber bumper by I_AM_THE_CLIT_COMMANDER June 3, 2007

onion bumper 

when i look at her ass it makes me wanna cry

onion bumper by fresh September 13, 2003

fuzz bumper

1. A mustache or less commonly the two or three day growth of pubic hair after shaving

1. Look at the fuzz bumper on that asshole

fuzz bumper by JP408 June 29, 2007

doughnut bumper 

a lesbian

"Wow, that was the best doughnut bumper porn ever."

doughnut bumper by SLOGAN December 6, 2002