One of Trumps many sycophantic white house staff, who
get such a raging boner from his position of
power they
basically act like he can do no wrong and will defend his position at the cost of everything; behaving like a simp only much worse, hence the term Sump.
Mitch McConnell: "Dude it's been almost 5 minutes and no-ones licked Trumps asshole! Where the hell is
Seb Gorka?"
Mike Pence: "
Nah, he's gone bro!
Trump fired him, he was way too much of a Sump!"