Top definition
Some sarcastic know it all, that don't know what he's talking about.

Making sarcastic comments about the cosmos.
Hey dude! It's so sarcosmic to tell me if I went to other dimensions just by smoking a little reefer.
What about 13123 Tyson? "Sarcosmic".
You are a sarcosmic shit who smelled uranus everytime. Please go back to your university and learn to get stars from your teacher.
via giphy
by simulacrap February 07, 2017
Get the mug
Get a sarcosmic mug for your boyfriend James.