Wow, not only did I like watching your naked wife but she actually gave me a hardon, would love to see and participate in the defilement of all her holes and beautiful curves.
You should whisper in her ear and tell her what a little slut she is for sucking a strangers cock in front of you. She'll probably try to respond but given the circumstances she'll probably just whimper and slobber all over it instead while she gives you a side eye.
Maybe, I'll skull fuck her just like you skull fucked mine. But instead of having my wife push her head down, I'd have you push her head down to deep throat my cock.