When one is invariably acting like the the demon child spawn that emerged out of the collective infected blistered vagina of Nancy Grace, Ann Coulter, and Sarah Palin without their charming good looks. When one is pulling a swetha, they are acting like a piece of shit straight from the gaping sphincter of hell.
Also can be applied to blowjobs. A toothy blowjob where one grips the cock hard and where the tongue feels like sandpaper is said to be a swetha blowjob.
Person 1: *enters room* Who the fuck are you to be here? Who are you, like who even are you? I'm better than you and you can't touch my class. Blowjobs are forever!
Person 2: You cunt bitch, stop pulling a swetha right now, no one gives a shit about your opinions or you.