You and Selever have been friends for about 6 years, and you're in every one of his classes. You sit next to eachother in them as well. You're both in math right now..

Teacher: So, you see, if Y equals 7.8, that means... Mathematic blabbering

Selever: He nudges you with his elbow, smirking Psst.. Look what I drew on your paper.. snicker

...It was a drawing of a small penis.