the product of putting milk and ice cream in ones butthole and pooping it out. The buttmilk shake is commonly served in a tall glass with a long sppon and a straw.
"Erin Jane put half a pint of Breyer's french vanilla up her butt and made a delicious buttmilkshake for her enjoyment"
by tortillachipgrl69 April 15, 2009

5 Words Related to buttmilkshake

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×