1. To take a tasty muffin snack and apply butter. Quite why it needs butter is anyone's guess
2. To
jizz liberally over a girl's
breasts (muffins)
"Did you get anywhere with Katy last night?" "Yeah, I gave her a pounding and then pulled out and asked her if I could butter your muffins."
Buy a
butter your muffins
mug!
