Quote Originally Posted by L_Clan_Sup3rMaN
Maybe if it was heads up with an aggressive oppenent or someone with history you had FE against. In this case, you can almost be certain that when he donks bet like that when 4 ppl are on the flop that your FE is close to 0. You are flipping against a king and are behind against sets, thus behind his entire range. Being IP here helps. Call and re-evaluate turn.