Some graffiti.
Draw the word STD
A snake, a robot and a balloon, spelling out "STD".
SID. The s is a snake, the I is a robot, and the D is a balloon.
A snake licking Benders hand, beside a red rune with a arrow in it
Slytherin House rep.
Old men means soggy balls
I really don't know, it seems like two black dots with grey scratches in the middle, while having underneath two blue badly drawn circles.
A girl crying over two blue dots and 2 black dots and a couple of lines
Doodle or Die is the game of "telephone" with drawing!