Top Definition
An abbreviation for "In all seriousness though", so basically just a lazy method of swinging the conversation back after going off on a tangent. Sort of common text speak.
1. That party last night was so fucking insane!
2. Yeah, lol. IAST I think it went a bit far when the ambulance showed up to stomach pump Sarah.
1. Lol, IKR
by linxie April 17, 2014

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.