it's an Indonesian slang which means when you're being way too sentimental or beyond sensitive about anything (take anything too serious) even on unnecessary thing
James: I'm so sad that Cleo didn't texted me today
Jaden: Dude, don't be Baper, you just met her for the first time this morning, she's not even yours!
Jaden: Dude, don't be Baper, you just met her for the first time this morning, she's not even yours!
by bish08 February 24, 2018
by PP Reina February 01, 2015
by chandrakona July 17, 2006