$55 Party, SB vs. BB, mid pair

Party Poker No-Limit Hold'em Tourney, Big Blind is t50 (9 handed) FTR converter on zerodivide.cx (http://www.zerodivide.cx/converter)

Hero (t1270)
BB (t2600)
UTG (t970)
UTG+1 (t1375)
UTG+2 (t864)
MP1 (t1045)
MP2 (t1265)
CO (t470)
Button (t2115)

Preflop: Hero is SB with Q/images/graemlins/heart.gif, 9/images/graemlins/spade.gif.
7 folds, Hero completes, BB checks.

Flop: (t100) 9/images/graemlins/diamond.gif, 8/images/graemlins/diamond.gif, K/images/graemlins/club.gif (2 players)
Hero checks, BB bets t100, Hero calls t100.

Turn: (t300) 4/images/graemlins/heart.gif (2 players)
Hero checks, BB bets t250, Hero?

[Maulik]

Why not lead the flop?

Lead the turn and see what happens?

[CardSharpCook]

you've taken a very strange line. Why not raise PF? If no raise, why not fold PF? As is, calling down it ok.