I want to have a hands free orgasm while watching my wife

I'd like to watch as another man with a bigger cock fucks my wife. Stand there naked while he lines his cock up with her pussy and slides in, see her eyes roll back in her head as his cock reaches deeper than mine ever could. Watch her moan as he pumps in and out, her pussy clinging to his shaft. Hear her gasping as she starts to cum and when he groans loudly and fills her womb with his sperm, my cock will twitch and throb and I'll spill my load all over myself.