By A Mystery Man Writer
Here's what happened when 12 random people took turns drawing and describing, starting with the prompt "Underpants Sans (Google it)".
SaNs - Drawception
Underpants Sans (Google it) - Drawception
UnderPANTS (not undertale) - Drawception
Sans - Drawception
Pixilart - Underpants Flawey (power of sans) by FardyNyan
sans - Drawception
Sans finds out about Undertail - Drawception
SANS FROM UNDERPANTS (undertale parody) - Drawception
Underpants/Derpy Sans (Inspired by Sir Pelo) by CoffinCrisp1 on DeviantArt
Underpants. (undertale parody) - Drawception