Top Definition
noun: A series of lies, lies upon lies also; a stack of reproductive male cows.
"So after I left the house on time, I was accosted by ninjas"

"Bullstack!"
by C.W.R.B. October 18, 2006
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.

×