Bumper-to-Bumper Humper 

A lesbian. Usually in an office setting.

I know she is a beautiful receptionist, Shahid , but she is a bumper-to-bumper humper. Sorry, man.

Bumper-to-Bumper Humper by tarkowsky September 20, 2017

[Bumper] [Humper] 

Someone who tailgates

I really wish this bumper humper would get off my ass!.

[Bumper] [Humper] by Kellyonious December 25, 2008

bumper humper 

1) an impolite driver who tailgates cars in front of them

2) a person who gets uncomfortably close to ones back side, typically while dancing

1) "Stop being a bumper humper. I'm already going 70 mph in a 60."

2) "That bumper humper at the bar almost touched my ass."

bumper humper by follow-my-arrow February 9, 2015

bumper humper 

A bumper humper is a man on man action when he would rather place his penis in other mens asses rather then have sex with a women. This could also be used as a phrase to simply call a man gay.

See that man over there wearing a pink shirt and kissing that other man buddy? He must be a bumper humper.

bumper humper by dan gemmtinte March 20, 2006

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!

Bumper-Humper by CrazyBatLady9 January 19, 2018