Is this call with jacks terrible?

[Bubsy27]

Party Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Just sat down,no reads or stats on villain

Pre-flop: (5 players) Hero is SB with J[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/club.gif[/img]
3 folds, <font color="#cc0000">Hero raises to $4</font>, BB calls.

Flop: 8[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/club.gif[/img] T[img]/images/graemlins/diamond.gif[/img] ($8, 2 players)
<font color="#cc0000">Hero bets $6</font>, <font color="#cc0000">BB raises to $12</font>, Hero calls.

Turn: 7[img]/images/graemlins/diamond.gif[/img] ($32, 2 players)
Hero checks, <font color="#cc0000">BB bets $15</font>, Hero calls.

River: 6[img]/images/graemlins/heart.gif[/img] ($62, 2 players)
Hero checks, <font color="#cc0000">BB bets $20</font>, Hero calls.

Results:
Final pot: $102

[YouCantEscape]

I would probably c/f the turn. Minraises are often 4 value or they are draws. In either way you are probably beaten now.

If you call that flop bet, you do it to c/r a safe turn and to c/f a bad turn like that. I think c/c a turn that completes EVERY draw makes any sense.

On the river you just beat nothing except a pure bluff. And his line really does not look like one. Fold.