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To inflate a woman's anal canal by pumping one's phallus in and out. The air pressure created by the pumping will result in a massive expulsion of the air once the phallus is removed.

The expelled air often has a minty aroma and tastes mildly sweet.
1. I bumpumped her and the sweet essence of heaven was emitted.

2. She was bumpumping me while i bumpumped the hell out of the girl in front.
bumpump by KorrrrrrnHuska December 14, 2009
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Bumpumentary 

Are a series of photos and or videos documenting your new arrival. Photos and or videos of your baby bump.
Jessamine’s baby album has a few ultrasound photos and several bumpumentary photos of her two moonbeams.
Bumpumentary by Starving Artist246 October 20, 2021

bumdumpling 

Stephanie visited me ome last night and filled me crapper with 11 softball sized bumdumplings....the lass may want to have er shat hole checked prior to reimbursing the town for the sewer damage
bumdumpling by cornfritter January 3, 2011

blumpumpkin 

Mark: Dude, my girlfriend and I celebrated Halloween the right way this year!

Trent: What did you do?

Mark: We carved pumpkins then she gave me a blumpumpkin!

Trent: Does she have any friends?
blumpumpkin by JA-ALLDAY October 1, 2013

Bumgumplish 

Your acting so bumgumplish right now.

Bum Pump 

A Pump Like Instrument, That Is Used For Clearing Out Ones Rectum, Prior To Anal Sex.
John: Ima Do Her In The Arse Later.......

Tom: Make Sure She Bum Pumps First, Otherwise, She Will, Without A Doubt, Dirty On Your Cock Stick...
Bum Pump by Buperter August 6, 2011

Bumwumpus 

A person with a really large butt that usually makes the sound of wamp.
Larry distracted me in class, all I heard was wamp. I bet he's a bumwumpus
Bumwumpus by PandaBoyRed March 9, 2021