How do i make my SO believe i can & will give him head? TMI SORRY!!

Ni
He throws low shade at me (in a playful way but i dont find it playful) i said i want to give u 'it' before we fall asleep! He said are you sure u could?! I said of course ** like wtf what that mean**?? (Are you sure u could?!) Ugh dont test my abilities i love him so much this just happened i kind of feel 'like maybe i can't but i know i can' help opinions **Dont be RUDE***