To thravish something means to destroy something but in a good way. It can also used to describe physical damage to something. However, its most popular use means to completely dominate and screw a girl really well in bed.
Instead of saying f*cked the shit out of her last night, you can say, "I thravished that ass last night."
My goodness I'm so hungry. I'm about to thravish this pizza.
Omg she's hot! She would get soooo thravished!
You see a car accident where a car is totaled. You say, "omg that car got thravished!"