Wife’s Fantasy

Last week my wife and I were having sex. We often talk dirty and fantasise and on this occasion I asked her who she would like to fuck given the chance
She replied an old man with a huge cock somewhat shocked I asked why an old man and she replied that her first sight of a real cock was her dad and he had a huge cock. She’d often think about his cock when we fucked. She now has me looking on swinging sites to find the right candidate. Not sure if it will happen though