by Neyak » Dec 18th, '07, 13:40
(when dropping cards/coins/... on the floor:)
"Oh, sorry, last time I performed on the International Space Station - I've got so used to a non-gravity environment..."
Then do a levitation/IT effect for proof.
Another standard way to recover if you're not sure whether you just did a DL or accidentally a triple one (happened to me before):
"This isn't your card, is it?" - if "yes", then you're safe, if "no", then go "See, I told you it isn't, now, that's 51 to go."
Another idea is something like this: Say you messed up a cf and the person points to the card one to the left. Just go "Why?" in a very serious and concerned tone as if something was wrong with their choice, this completely throws the spectator, they'll look at you with a questioning face at which point you apologise "Sorry, just joking, take it" and thereby dropping the right card on the table.