A Dillon Cap is when the cap to a plastic bottle is placed on top of the drink as opposed to being screwed on. The drink is almost always spilled.
John sees Dillon's Dr. Pepper on the table and slaps it away. It was Dillon Capped and spilled on everybody.
Dillon: DUDE WHAT THE HELL?? MY SODA!!
John: MAYBE YOU SHOULDN'T HAVE PUT ON A DILLON CAP!
Dillon: DUDE WHAT THE HELL?? MY SODA!!
John: MAYBE YOU SHOULDN'T HAVE PUT ON A DILLON CAP!
by barfightprincess June 20, 2014
Get the Dillon Capmug. by spasmyyute69 September 17, 2021
Get the knee cap spasmmug. To feel a kind of happyness or joy from writing graffiti/street bombing. Can be connected to being a Graffaholic. The word comes from Trigger Happy and was "invented" by HR Crew in Sweden.
by WESK HR April 19, 2018
Get the Cap-Happymug. 
You might be thinking of kapp or kappa, the twitch emotes used to call someone's bluff or accuse them of lying
Dumbass: "Yah dude and I was the best player they had. No one could beat me" Me: "kapp (cap), you were not" or simply "kapp"
by guest_2 December 7, 2019
Get the capmug.