When the dick is so hard and big that it won't fit.
Physiologist : So you had sex last night? describe how that felt. Girl : His dick was gravel.
A person who is a pain in everyone’s ass /j. He plays the quad and is a very smart boy… but he does not know how to spell for the life of him. He is very kind towards others but be warned, once he befriends you… his attitude will change into a jokingly rude in a nice way one. His best friend is Swamp and he bullies her relentlessly.
“Do you know gravel?”
“Of course!! Who dosent?? I’m pretty sure he was controlling the score board at last nights football game. Nice boy, very nice boy “