This icon is the Cheese Man, who appeared in the linked dreams of Buffy, Giles, Xander, and Willow in the S4 finale "Restless". He was sort of a David-Lynch-meaningless-but-funny-one-off character.

In this cap, he is informing Giles in his dream that "I wear the cheese. The cheese does not wear me."

Giles responds with a mutter: "Really, I meet the most appalling sort of people."

I use this icon when I want to say silly things.

:)