Clyde is one of the South Park elementary school students and has given several last names on the show: Goodman, Harris and Donovan. We're gonna go with the last one as our official choice.
Clyde: Hey what's going on?
Kyle: Tweek and Craig are gonna fight!
Clyde: Really? CoolIt's funny because Tweek and Craig both went home about 15 minutes ago.
Token: Yea, they left.
Mr. Mackey: Wh-wh-what you need to do, uh, Damien is...is to be overly nice. See, n-no matter how mean the other kids are to you, just don't retaliate. Err, be passive, mmm'kay? That's what I taught the little British boy, Pip, an-and just look at how much the other children like him now!
(scene changes to the playground, a group of kids are gathered around Pip)
Clyde: I bet I could spit the most on him! (spits on his left shoulder
Bebe: Oh, yeah? I bet I could spit in his hair! (spits in his right eye)
Pip: Oh! Nice try! A little higher and you've got it!