Definitions by Websters dictionary 23

Pronghorn 

is the act of being hypocritical in a aggressive manner. When directly approached they often passively ignore their predator and run instead of fighting back.

Alan's classic case of pronghorn flu resulted in the man beating him up.
"your a pronghorn if you think im gonna let you gt away with those comments"

Pronghorn by Websters dictionary 23 February 21, 2019