if you really decided to just c/f KJss (or something like that) on the flop would you call this turn raise or get into a pissing match on the turn with it because you don't believe him and you think he will only believe you if you bet lots of money? If you went for a goofy check/call with T9 or 89 on the flop would you now 3bet the turn? If you just call here your range is pretty balanced, and you can credibly represent turning a missed draw or weak made hand into a bluff on the river when you check/raise. If you 3bet it just looks like you made an awful slowplay with a boat/quads on the flop.