Top Definition
Stands for : If I Don't Reply Um Asleep. An acronym teenagers typically use while text messaging until they literally drop down and sleep.
A typical teen : dude. i am getting in the shower. brb.
Another typical teen : okay. but iidrua.
by codename May 21, 2008
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.