Wife Begging to Fuck Her Ass

I tried to fuck my wife's ass, she has a huge ass and a very hungry ass hole, she needs cock in her ass every day but I can't because of my sexual impotence, I'm already 50 years old and I'm very weak, I was left to be just a meek cuckold husband who shares his fleshy wife with others, I want my juicy chubby wife to have many anal orgasms and hear her moaning loudly on someone else's cock