It's a fantasy role-playing game.

DM: You are Grog Strongjaw, a goliath barbarian . You are the member of the famous group of adventurers. Previously, After slamming his feet into the sand and preparing himself for conflict, he beckons  you  towards him.  you faces off with Earthbreaker Groon.
DM: 24, he got a 21. So we'll say for this, you go ahead, you'll be releasing the grapple, but you slam him on the ground and make him prone. So you manage to just (grunts) rip him off of whatever weird center of gravity he's forced himself into, lift him over your head, and just pile-drive him into the ground.
Player: Great.
DM: (boom) Once again, you see sand and dust kick up, and then you see these two legs sticking up as you've basically planted him in the ground like a carrot. And he is currently prone on the ground, yes.
Player: Great! When he's prone, do I get advantage on attacks?
DM: When he is prone, attack rolls against the creature have advantage if you're within five feet, so yes you do.
Player: Great. Great Weapon Master, dwarven thrower, and I say I want to know the answer to the lesson! (everyone laughs) 29 minus five, 24?
DM: 24, that hits.
