Kupiin (en. To fit)
koo-peen
Slang Meanings
To play pranks or jokes on others.
You might prank someone again without knowing it, because I'm laughing so hard at your joke!
Baka mag-kupiin ka na naman ng hindi mo alam, kasi sobrang tawa ko sa joke mo!
To pretend to be someone else.
Don't pretend, show who you really are!
Huwag kang mag-kupiin, ipakita mo kung sino ka talaga!