a big lick
A person who kisses ass so hard they could win a championship. They don’t just kiss it, they lick it, chew it, and leave a stain.
My boss is a big lick. He'll do anything for a promotion, even eat my lunch.
She's the biggest lick in the office. She'll poop in the boss’s coffee if it means getting a raise.
He's a big lick at the gym. He'll flex, bow, and lick the floor for a free membership.