Who said "Heh heh, you said 'hard'"?

This quote is attributed to Butt-Head.

Heh heh, you said 'hard' - Butt-Head

"Heh heh, you said 'hard'"

Butt-Head Humor

"That was cool."

"This sucks."

"Like, what are you looking at?"

"I'm like, so tired of this."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."