Top Definition
Abbreviation for "In Real Life I Don't Know You", most commonly used in text messaging and sexting as an excuse not to give out personal information.
"Hey Billy! Send me dem n00ds!"
"No way! IRLIDKU!"
"You could know me if you wanted.."

"Billy, I'd love to come over tonight but my mom won't let me because IRLIDKU. She says you could be an internet predator."
by Madë Beautiful December 26, 2012
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.

×