My Favorite Chess Trap That Wins Every Time

My Favorite Chess Trap That Wins Every Time:

I keep catching people with the Fishing Pole Trap in the Berlin Defense:
e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Ng4!?
They fall for h3...h5 and then wham — knight sac, open file, and game over.

Anyone else have a go-to trap you love pulling off?

I've not played the Albin Counter-Gambit since I was a Junior (a very, very long time ago indeed), but the look on an opponent's face when one uncorks the under-promotion on Black's move 7 of this line can be amazing. Squirm how White may thereafter, Black has a whopping great advantage.

The one down-side of this line if playing face-to-face can be difficulty finding an extra Black Knight with which to under-promote.

hi

Everyone that has played chess for more than 24 hours knows this one. The Albin is highly unsound.

1.d4 d5 2.c4 e5? 3.dxe5 d4 4.a3! Followed by 5.e3 - clear advantage White!

@ThrillerFan I absolutely agree. Spending hours learning the Albin is also a really poor idea because you have to learn some other Queen's Gambit line as well anyway; for those occasions when White plays 1. d4, d5: 2. Nf3 intending 3. c4.