Top Definition
one who is annoying and picks his balls infront of everyone. also thinks his own sister is hot!
stop being an isaacliu you bumbaclut. i don't need to hear the stories about you and your sister
by stevens July 10, 2004
A person who backs up into a dumpster.
Oh man, my insurance went up because I was an isaacliu and backed up into a dumpster.
by John September 01, 2004

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.