"Ow, dammit!" The whole class had been working on a cut-and-paste project while Mr. Garrison was rambling on and on about God knows what; while picking up one of the scraps of paper, Stan Marsh had accidentally given himself a paper cut. His best friend, Kyle Broflovski, noticed this, and he took out a band-aid from his backpack and handed it to him (Sheila Broflovski was insistent that her son always carry around a band-aid wherever he went).
After receiving the band-aid, Stan said: "Thanks, man."
"No problem," Kyle replied, and the two went straight back to work.
THE END