Top Definition
An abnormally large black dildo.
"Yea, so I walked in her room and saw her masturbating with a billdillbadack!!! How did she fit it up there?"
by Laljdeofa February 05, 2009
5 Words related to Billdillbadack

Free Daily Email

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

Emails are sent from We'll never spam you.