Omg I had this moment a month ago. We had started that chapter in chemistry, an I was like, "wait a second, I know that symbol..." Lol that led to me playing half-life 2 again, and playing the original for the first time.
I think the funniest thing about this picture is how simple and quick it was! It really made me laugh, I liked it! Plus the main person in the comic (you I presume) just reminds me so much of an old classmate from my math and science class, high five and all. XD