Someone who is a know it all but when challenged on a topic they profess to be a genius about they can't front up - just like moss they have no depth / roots
He's moss
by Busface February 13, 2015
Get the Mossmug. A perfect person. You'll be lucky to have them.
by Alphabet forgetter October 1, 2021
Get the Mossmug. Person 1: Hey did you see him yelling about his bacon pastry in a public place? So many people were staring at him!
Person 2: Yeah, they’re such a Moss.
Moss: MMMMMMMM THIS IS THE BEST THING THEY SELL HERE
Person 2: Yeah, they’re such a Moss.
Moss: MMMMMMMM THIS IS THE BEST THING THEY SELL HERE
by FizyWater January 2, 2022
Get the Mossmug. A fetus that grows from semen on the ground of a mossy section of a parking lot or other drivable surfaces.
by NevDIEMON February 25, 2024
Get the moss babymug. by anonymous November 17, 2020
Get the a mossmug. 
