Read this guide and learn when to play second-pair aggressively: http://www.splitsuit.com/when-to-bet-second-pair-for-value Influx squeezes preflop with JJ, gets a single caller, and ends up flopping second-pair on a Queen-high flop. After CBing the flop, Influx reverts back to a check-call strategy and SplitSuit jumps in to explain what a better line might look like and why check-calling the river might not make much sense in this exact situation.
