A person who instead of accepting defeat in a argument says offencive things towards you that were in no way related to the argument.
Jen: Okay, seriously , ive had enough with your crap
. You know i won the argument so go away!
Sam: You know what skrew
you jen! Atleast i'm not fat
. I work out. Unlike you!
Jen: Oh my god Sam you're such a blund!!!