What's the biggest bluff you've ever pulled off?

I once bluffed all-in with 7 2 somehow got a fold. What's the craziest bluff that actually worked for you?

Bluffed shove AJo on QQT94 with 4 hearts repping the flush vilain folded and flashed KQs. Sweaty!

This would have been close to thirty years ago. I was playing 7 card stud at Foxwoods and was head to head with another player. On the seventh card, which is dealt face down, I got the card to fill whatever the hand was that I was drawing to. Unfortunately I gave a slight smile, which I could see the other player notice and he immediately folded. Awhile later I was head to head again against the same player and didn't draw the card I needed. However, I gave a slight smile and bet out. He immediately folded.

The moral of this is that "tells" can also be used against you.

...close to the ITM, I defended KTc, the villain had 7x the value of my stack... the flop comes J4J, he bets and I call... on the turn comes Q, I check and he checks behind... on the river comes a 3... I bet 80% of my stack and he takes a while and folds... with this hand I managed to go far in the tournament and get a good prize...

I can’t recall a specific hand, but when I bluff because my story makes sense to my opponent, and I raise to get a better hand to fold…. Well, in my mind (or out loud if I’m playing online) I’m saying, “Fold. Fold. Fold!!” Then they ask me if I was bluffing and I say, “Oh, I never bluff!” I also very, very rarely show my cards.

I passed 3 times with J5 defended in BB in a K93 showdown 7 T in river against 2 they made a bet for value and I sent all my chips, it was a final table

I can't remember exactly, but I had a weak hand and checked all the way. When the river appeared, I bluffed since there existed a combination of two small hole cards which would form a straight, and the opponents all folded. I held two rubbish card instead.

I hardly make bluffs when I play, I think I'll have to learn to make bluffs.