Here's what happened when 12 random people took turns drawing and describing, starting with the prompt "Underpants Sans (Google it)".
Sans - Drawception
sans. - Drawception
Finally Mail!! : r/Undertale
Underpants Sans (Google it) - Drawception
SANS UNDERPANTS Meme Generator - Imgflip
Underpants Sans (Google it) - Drawception
Sans. - Drawception
Sans - Drawception
Underpants Sans warns SANESS not to have a BAD TOM by Abbysek on DeviantArt
Pixilart - Underpants Flawey (power of sans) by FardyNyan
UNDERTALE UNDERPANTS Fangame
Finally Mail!! : r/Undertale
sans - Drawception
Sans Undertale - Drawception
Underpants Sans (Reupload) by Cezar Andrade - Game Jolt