NL10: TT as overpair - call a shortie's flop shove?

[Bostik]

The villain bought in for $6 only a few hands earlier. He's been limp-folding a lot, and called down cheaply once with a rather questionable hand (AJ). I expect him to leave the table without reloading if squeezed dry.

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

CO ($20.30)
Button ($1.70)
SB ($4.30)
BB ($10.20)
UTG ($10.25)
UTG+1 ($14.20)
Hero ($20.70)
MP2 ($10.30)

Preflop: Hero is MP1 with T[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $0.4</font>, <font color="#666666">3 folds</font>, SB calls $0.35, <font color="#666666">1 fold</font>.

Flop: ($0.90) 8[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB bets $0.4, <font color="#CC3333">Hero raises to $1.5</font>, SB raises to $3.9, <font color="#CC3333">Hero seeks advice</font>

<font color="blue">I suspect the villain would have 3bet QQ+/AK pre-flop, so I'm not really worried about those. A pair of jacks is my biggest concern, since it'd make sense played like this. What other hands would a he first underbet and then shove?</font>

If it's a set, he certainly got lucky. Can I call here and see him turn over a weaker hand often enough?