I meant on flop but actually I guess I'm being retarded and call is super standard since we're a bit deep and his bluffing frequency is gonna be very low (but he maybe sometimes bluffs here since you are likely to fold a lot and Zep basically has to fold his entire range).

With zep in MP it's basically impossible for you to have Tx and presumably shark can work that out making this spewy. If you think he expects you to call his flop raise w/ TT based on history etc. then this is fine. Your line looks fairly fos though and I give shark enough credit to realise this.