can i fold?

[elysium]

loose marginal 10-20 'know what your holding'.

pretty cut and dry, nothing sensational, so basically i will just focus here on my question.

i'm on the button with AQs and flop QJXr. the only player to call my flop bet is the SB. i put him on J7, and am fairly confident about this read. he could have J8 as well. he knows i know what he's holding, and i know he knows i know. what's his tell? middle pair, he exhibits one gold tooth; top pair two gold teeth.

i look left. he has middle pair and.......weak kicker. so i know he will fold on the river, and am planning on betting out on the river to fold. pretty basic.

the turn; J [img]/images/graemlins/frown.gif[/img].....you guessed it [img]/images/graemlins/grin.gif[/img]

i bet out angrily and get check-raised. can i fold? i'm not getting the odds to spike.