1 definition by WHAT.do.YOU.want

OAS

Obligatory Adderall Shit. This phenomenon occurs approximately between 30 minutes and 2 hours after the consumption of Adderall. OAS' usually comes out of nowhere and require immediate location of a restroom.

OMG... dude I feel an OAS coming on!

I'm ready for the day now, just had my OAS!

by WHAT.do.YOU.want November 10, 2009