Online 6-max game. You raise UTG to $8. Everyone folds to the blinds. They both come along. Flop: AJ2. Blinds check; you bet $18. SB folds, BB calls. Turn 7. BB checks. You bet $40. BB calls. River Q. BB bets $100. Your read on BB is he's a solid regular.
What should you do?
Correct Answer: Call
Your hand improves to two pair but raising doesn't accomplish anything. The big blind is very rarely going to call a raise with anything worse. Since the stacks are deep, you should flat-call and see a showdown.