100NL- KK in a very awkward position on the flop when an A hits

[Imrahil]

Villain is 33/12/3.4 over 90 hands. He only has about $50 left on the flop.

Poker Stars - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

<u>SB: $72.60</u>
<u>Hero (BB): $100</u>
UTG: $100.95
MP: $151.60
CO: $84
BTN: $112.65

<font color="black">Preflop:</font> Hero is dealt K[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG calls $1, 3 folds, <font color="red">SB raises to $6</font>, <font color="red">Hero raises to $20</font>, UTG folds, SB calls $14

<font color="black">Flop:</font> ($41) 2[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/heart.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] (2 Players)
SB checks, Hero?

I'm never folding here but how can I get my opponents money when he has a lower PP? Should I check behind here? Or put him all in? Or bet $30 call a push?