What are some of the best lines of trash talk that you've heard over the board.

I've recently been laughed at alot for making Star Wars and Indiana Jones references in blitz games.

Recently my friend Collin was pawn grabbing, and despite repeated warnings of greed, I eventually started gobbling his pieces with the phrase "thats right, all for daddy!"

Impressive, but your pawn has not promoted yet.
You are the Rick Zombo of chess.
Ah, the Saskatchewan variation.
Fine's symbolic phallus takes f7 check.
I offer you a mate in four.
Up to here we followed a game between me and your mom; here she diverged by queening my pawn.

To loosely translate from the Spanish, one guy was famous for saying "Ah, you're playing the Bonehead Variation!" and similar things. One day someone responded, "no, it's the Anti-Bonehead Variation!" That became a blitz stable at the club.

"If you take this queen now, it will become more powerful than you could possibly imagine."

Ok, not so much trash-talk as a cunning way to discourage one's opponent from taking a hanging piece.

Who is Rick Zombo? I googled him and they say he is a hockey player. Is this an inside joke, or does rick zombo have a reputation in hockey?

He's a hockey player known for scoring only 24 goals in his 652 game career. Hockey fans often consider him one of the least talented players to make it to the NHL. I think Rob Zettler was a lot worse, but I wasn't the source of the comment.