Who said "I'm sorry, but you're my density. No, wait, your density."?

This quote is attributed to Dr. Emmett Brown.

I'm sorry, but you're my density. No, wait, your density. - Dr. Emmett Brown

"I'm sorry, but you're my density. No, wait, your density."

Dr. Emmett Brown Humor

"Great Scott!"

"This is heavy."

"There's that word again, 'heavy.' Is there something wrong with the Earth's gravitational pull?"

"If my calculations are correct, when this baby hits 88 miles per hour, you're gonna see some serious shit."

"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."