1.) Additive exclamation to indicate sarcasm has occurred. (Pronounced bip, with a short "i", often dragged out with up down pitch to indicate the degree of sarcasm)
Used as a sarcasm alarm for those who are clueless when sarcasm is being used. Often accompanied by a hand being slowly raised during the execution of the beup as a visual aid to further help the clueless person identify the sarcasm.

2.) Used to indicate that someone has said something that is random or makes no sense.
1.)
You: Why are you carrying that wrench?
Me: My doctor told me that holding large metal hand tools has excellent anti-oxidant properties. (raising hand) Beup. (biiiiiiiiiiiiip)

2.)
Student taking calculus test: (looking at test, raises hand)
Teacher: Yes?
Student taking calculus test: (still looking at test) Have you ever seen Gilligan's Island on TV?
Teacher: Beup. (biiiiiiiiiiiiiiiiiiiiiiiiiiip)
by Pipistrello January 5, 2006
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A slang for expressing that you feel great/something really exciting is about to happen(happened)
First used by korean group Block B´s member Kim Yukwon,who is said to have invented the word by accidentally hitting his keyboard.He used it for Tweets ever since.
Ukwon: I still can´t believe we´re going to Europe today! Beup Beup!!!
by (0.o) March 7, 2017
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burping after consuming a large quantity of beer fast
alyssa started beuping after doing several beer bongs
by bannanabutt July 7, 2008
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