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 21, 2014