.BUP 

A .BUP file is a file quarantined with McAfee security usually due to other malware coming near the file

Hey bro did u encrypt that file?
Yup! it's a .BUP file!

.BUP by hiddensea1234 April 19, 2021

Bup 

The sound Toad makes whenever he feels extreme emotion of any kind.

Also it's a Simpleflips meme ;)

I'm going to bup you so hard you'll bleed out your bup.

Bup by Bupboy November 15, 2017

Bup 

A term of endearment used when acknowledging a good friend or a romantic partner.

A pseudonym reserved for individuals that one cares for romantically or adamantly.

You always have my back, Bup.

Love you too, Bup.

Bup by Saltybags September 12, 2018

Bup 

1) Used to describe ones own ambiguous behaviour. Often shouted or hash tagged on twitter.

2)Used in social networking to provoke confusion as to the meaning of the word. Used when behaviour has no meaning

3) Can also be used ironically for attention. Often when happy or excited

1) "yeh just ate like 10 asparagus's #BUP"

2) "what does bup mean?" "BUP BUP BUPBubpbubp"

3) "Off to a party in Londen BUP!"

Bup by Cham777 February 12, 2013

Bup 

An expression used when one has nothing to say.

Bob: Were we supposed to meet the girls at 8 ? It's 9 now man.
John: Bup.

Bup by TheActualRealSuperman July 16, 2011

Bup 

The sound Toad makes when plowing Toadette cooch'

bup. Bup. BUPP BUP BUPPPPPPP. buuuuuuuup.

Bup by EmVeddii July 22, 2019

Bup 

Replicating the sound of a gunshot to indicate vigorous approval; usually uttered in rapid succession with an accompanying thrusting of the hand in the air.

"Rewind selecta! Bup bup bup!"

or

"Bup bup bup Kofi Annan...good point! In your FACE Colin Powell!"

Bup by J Hall April 3, 2003