2 definitions by Alaeriia
Short for "baseline", a sline is someone with no marketable skills or useful knowledge nor hope of acquiring same. Essentially, a normie that has no hope of improving.
by Alaeriia May 8, 2017
To send unsolicited pictures of your genitalia to another person online, typically with the hope of reciprocation.
"This random dudebro just penced me on Facebook Messenger. I replied with a gif of a banana being sliced and he blocked me."
by Alaeriia January 18, 2019