Players favourite card's!
I don't have any because they all have just as much chance of winning even 7/2 get's lucky now and again, Playing your favourite hand is dangerous because you expect too much from them at time's.
Believing that they are your lucky card's and always win for you is a sure way to disaster, and I love playing against such players, If you kept record's of how many time's they win or lose you would probably find that it isn't actually true, but you believe in them so much you have to play them regardless of how much they are costing you.
Poker is not an exact science, but math is, and if you stick with the mathematics of the game you can seldom play wrong, "Know when to hold-em, Know when to fold them" is more than just words in a song, There is a lot of truth in that statement.
When the fun Stops, STOP!