Another thing that i think gave it away was when you told HIM to choose the card. One possible reason you'd leave the card choosing up to him is that it didnt matter which one he picked, because both of the cards were the same. So as soon as you flipped over an Ace, he could have figured that the other one was an Ace as well because of you allowing him to choose the card.Jack Strauss did something similar, except he made the other guy pay him $25 lolhttp://en.wikipedia....iki/Jack_Straus
Straus is credited with one of the most celebrated bluffs of all time. While playing in a high-stakes no limit Texas Hold'em cash game, Straus had won several large pots in a row and so decided that he would raise the next hand pre-flop with any two cards. When he looked down he found that he had been dealt 7-2 offsuit, the worst starting hand in Texas Hold'em, but, playing a 'rush', he raised anyway. Straus' raise was called by a single opponent and the flop came 7-3-3. This was a good flop for a 7-2, so Straus bet out. However his tight opponent made a large raise, indicating a likely overpair to the board. Straus knew he was almost certainly behind, but he decided that he might be able to beat his opponent by representing trip threes, so he called the large raise.The turn was a 2, for a board of 7-3-3-2, which was no help to Straus with a better pair already on the board, but he made a huge bet anyway. This set his opponent thinking deeply. Straus knew that he was desperate to avoid a call, as his chances of drawing out to win on the river were very slim. After a few minutes, Straus offered his opponent a proposition. He told him that for $25, he could choose either one of Straus's hole cards and Straus would show it to him. The guy considered for a while, then tossed Straus $25 and chose a card. Strauss showed him the deuce.After another long pause, his opponent eventually figured that Straus would only make such an offer if both his hole-cards were deuces, therefore giving him a full house, deuces over treys. He reluctantly folded, and Jack Straus entered poker folklore as one of the most creative bluffers of all time.