It can be used as an exclamation, noun, or adjective.
Person 1 "I have terminal cancer"
Person 2 "Boopus"
Person 1 "I have terminal cancer"
Person 2 "Boopus"
by Xydeco June 12, 2022
A person who is half an engineer, half a business man, half a rubber duck collector, and one quarter a lover of "The Office". This person is all around weird but you like them anyway.
When your boyfriend is drunk at 2am and cannot type "doofus" so instead he types "boopus", but he means it.
by potato3773 December 14, 2019