[adanthar]

Solid multitablers don't try to call other solid multitablers' turn bets from the blinds trying to take it away on the river. Gigabet can do that once in a while, but the average 109 6 tabler? No.

The draw just hit (come on man, I get pissed once in a while because no one ever reads the whole post) and middle pair may call because the river card is low. KQ or Ax not only don't call this turn, they don't limp in the first place.

As for why you bet a jack...it's a J94 board. The SB has nothing. The CO limped and apparently you don't put him on aces. Who wants to give free cards here? Anyone?