The act of quickly inserting one’s index finger into the top of another’s butt crack which is exposed above the pant waistline. It is often exclaimed when the act is performed.
Girlfriend: “Boop!” <boops boyfriend working on car>
Boyfriend: <hits head on open hood of car> “Stop booping me!”
Boyfriend: <hits head on open hood of car> “Stop booping me!”
by BloodOftheHolyMammal July 28, 2022
Get the Boopmug. 
by 1kslim September 6, 2018
Get the Boopmug. 
When a Brazilian man requests you to eat their ass and you instead poke their butthole and say “boop”. The Brazilian man then proceeds to bounce on your finger
I was hooking up with a Brazilian guy and he asked me to eat his ass, So I poked his butthole and said “boop”. I gave him a Brazilian booping
by ItzGreedx January 10, 2024
Get the Brazilian boopingmug. When you touch someones nose with the index and or middle finger. It is a huge commitment. Basically proposing.
by Space Llama January 25, 2020
Get the The Nose Boopmug. by nevvyc February 3, 2024
Get the Betty Boopmug.