The best defense is, well, not playing T4s

[Snoogins47]

PokerRoom 2/4 Hold'em (4 handed) converter

Preflop: Hero is BB with T[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/club.gif[/img].
UTG folds, <font color="CC3333">Button raises</font>, SB folds, Hero calls.

Flop: (4.50 SB) 3[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players)</font>
Hero checks, <font color="CC3333">Button bets</font>, <font color="CC3333">Hero raises</font>, Button calls.

Turn: (4.25 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, Button calls.

River: (6.25 BB) 2[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>
Hero checks, Button checks.

Final Pot: 6.25 BB
<font color="green">Main Pot: 6.25 BB, between Hero and Button.</font>

I'm really green to shorthanded $2/$4, and I'm often lost as to how liberally I should be calling out of the BB vs. a single raise coming from different positions. Any comments? I thought this could obviously be a steal, and getting 3.5:1 seemed to do put it over the edge, though T4 is a admittedly a very, very sketchy holding out of position.