Quick question about a common situation - default play

[Cerril]

Holding a big pair (JJ-KK) on the button, one caller (if position matters let me know). I raise, two calls (if it changes the play if it's the BB or SB that calls - let me know). Limited reads other than that neither is particularly anything. Of course TAGs don't tend to read early on, but they're not especially loose or stupid aggro.

Flop comes Axx (two unders to your pair), no OESD or flush draws. A bet and a call to you, 6SB in the pot. Is this a clear fold, clear anything?