bumping and grinding 

The action of dancing which requires the buttocks to tease the the groin of the partner...in which the dancer is dancing with.

There was alot of bumping and grinding going on in da club!

bumping and grinding by Cheese and Colon June 3, 2006

jack bumps 

After jacking off you have an acne breakout.

Freddy must have been jacking off last night. He has jack bumps all over his face.

jack bumps by MLXK February 5, 2008

Poo Bumps 

The warning sign of goose bumps that a big poop is about to happen. There is typically little chance of holding in a poop when this warning sign occurs.

Will began frantically searching for a bathroom as soon as his poo bumps appeared.

Poo Bumps by kuk6969 December 23, 2010

this bumps

It’s a jam, u fuck with it, lit song

*listening to dedication 6*

Person 1: shit bro this bumps
Person 2: hell yeh it’s fresh as fuck

this bumps by Lulax April 22, 2018

beaver bumpin

When two women bump vaginas to get their pleasure.

(: Female -->|<-- Female :)

beaver bumpin by Dr. Smith May 10, 2005

e-bay bumping 

Manipulating the price of an e-bay auction by simply placing a bid with no intention to buy, but rather to increase price more rapidly for the seller. Should the bumper be the winner of the auction, they will be transafered the money by the seller after payment, and give him back his goods.

Sometimes this occurs when the bumper simply wants to annoy others by pushing the price to ridiculous amounts near the end of the auction so desperate bidders place higher bids. These people also enjoy pestering the seller with questions about thier sexuality and underwear hygeine.

Spotting e-bay bumping is quite hard, since many n00bs unintentionally push the price up by placing consequtive increasing amounts for the same item within minutes.

If you notice that an item has a bidder who has placed multiple bids for an item, check thier feedback. If you notice this person has bought several items over a long period of time from the current seller, you have probably uncovered a scam, and should report it.

e-bay bumping by the slut formerly known as your mother September 25, 2004

clam bumper

A homosexual woman. (slander)

Man: "How did I know my girlfriend would run off with a clam bumper?"

clam bumper by Spud January 27, 2004