Bumper-Humper

A driver who tails another driver so closely that his/her headlights cannot be seen.

That bumper-humper's riding too close to me--he's going to end up in my backseat!

boat bumper

A slang term for vagina to vagina sexual contact.

I caught my sister and her best friend in the middle of a boat bumper session!

Bumper Allen

A guy who is so hot he makes me weak in my knees

Amy: Did you see the head Treblemaker

Hailey: Yeah. His name is Bumper Allen

Dumper bumper

To act, or be a queerosexual and or act like the gay, fudge packer Tom Cruise.

In prison don't drop your soap because you could get sexually assaulted by a dumper bumper.

lemon bumper

A slur usually used for gay women.

"Wow, look at those lemon bumpers."

Back bumper

Worldwide term for someone’s ass

She’s got a back bumper! Who knew!!

Bumper boats

Wet vagina lips

Also known as 'Men's Lips'

"Stop flappin your bumper boats ".