When you choose to stay sober (because you're either lightweight or pregnant), but pretend to be wasted with everyone who is getting drunk.
Girl #1: Everyone is getting drunk, wats wrong wit chu gurl? It looks like you wasted but you hasnt drunken all night...
Girl #2: I'm gettin' sober wasted!
Girl #1: why tho?!
Girl #2: I'm preggo!