(v) 1. To quickly escalate an argument to a point where your opponent has no chance of winning.

2. To play a trump card.

Based on a stand-up comedy routine by Dane Cook in which an escalating customer service situation at a fast food restaurant is abruptly ended by use of the term "Gaylord"
Chase and I were having a stupid fight at the nursery over which variety of orchid to buy, so I had to slam down the G.L.
by FuriousFritz February 24, 2009
Get the Slam down the G.L. mug.