Thwacked, unthunk, undone and unfun. That feeling you get right before your faceeatsasphalt and also that feeling you have right after you stand up... If you stand up.
"That little brat, I thwunked her shit right up." "As puke was rising in my throat on the roller coaster I felt completely thwunk." "It's a bad moon tonight, this drug combo thwunks"