OK JR, explain yourself

[davidross]

PP 2/4. DIdn't get a hand history so here is what I remember.

I open raise from lp with KK. (May have been a limper). Cold called to my left and 2+2er who may wish to identify himself 3 bets. Folded to me, I cap it, Cold caller calls as does 2+2er.

FLop A, 5, 3.

I bet, CC raises and 2+2'er 3 bets. I fold and watch.

Turn and river bring a T and another 5.

CC shows AQ and wins when 2+2'er shows a counterfeited A3s.

So why the 3-bet with A3s??