because you like math, and this is funny
published on: 2014-01-03 09:50:38
whetlips.tumblr.com/post/72071908914/
whetlips.tumblr.com/post/72071961305/
whetlips.tumblr.com/post/72072034892/
whetlips.tumblr.com/post/72072050957/
whetlips.tumblr.com/post/72074691817/
whetlips.tumblr.com/post/72074805064/