1 definition by Justina Beiber

Cumb

An acronym that stands for "Chuckling under my breath" instead of lol/laughing out loud. As no one really laughs out loud when using the lol acronym.

Generally used via text messages or online social media messaging apps.

Friend: Sends a funny meme
Me: That made me cumb

by Justina Beiber February 29, 2020