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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!
by Cheese and Colon June 3, 2006
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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.
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Bumping Castles

When two dudes bump there erect cocks into each other.
Hey Tommy later after we snort some crack. Do you want to try bumping castles? Yes Mark! But only if I can dock your hard cock! (see docking)
by Big Pantie Slayer August 6, 2012
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bumping fists

When two people bump fists
Jeff and Mike were so happy with their work, they ended up bumping fists with satisfaction.
by D0ntThink2hard April 3, 2017
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bumping raisins

When two women engage in female lesbian sex. Bumpings clit on clit. In simpler terms, two girls rubbing pussy on pussy.
"Omg girl, Lindsey and Andrea are totally bumping raisins"
by LesbianLoverLKAH May 13, 2017
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Self-Blumping

Using a fleshlight with a mouth-shape to pleasure oneself while taking a dump on the toilet.
Self-blumping
by Pablo Escobarr February 27, 2011
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Bumping them gums

The act of talking too gaadam much, talking aimlessly
Mr. Theodore Lee! Quit yo bumping them gums !
by Ant138767 April 26, 2015
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