You're playing in an aggressive six-max game online. It's folded to you in middle position with 57 and you raise to $8. Everyone folds to the big blind, who calls. The flop comes K48. The BB is your average $1/$2 non-regular. Not terrible, but definitely not good. He donk-bets $10 into you on the flop.
What should you do?
Correct Answer: Raise
This is a weak lead by your opponent. Often these bets are made by players with a small pair attempting to see where they are at. Raising will take down the pot immediately a high percentage of the time. Those times it doesn't, you do have your straight draw to fall back on - it is a strong semi-bluff.