In poker, when you hold a strong starting hand and raise a lot of money to see the
flop, only to have not matched any cards when seeing the
flop making your hand completely
useless.
Starting hand of A/K. You raise double the blinds, someone else raises double that, you raise again or go all in because you're pot committed.
The dealer turns over the first three cards (
flop) and it's 5/2/J all of suits other than the ones in your hand. Probably giving the other guy a really strong hand against you and effectively costing you all your money.
That, my friends, is getting
flop nobbed (a
Flop Nob).
Common usage: "Hey man, the tables were rough last night, I was constantly getting
Flop Nobbed!"