Help Me Get My Wife To Peg Me..

Hi all, as you can see from my profile I am a 56 yo guy, as I have said before, Sex life and role playing is great with my wife and we are in to latex but nothing OTT ... but.... no matter how many times I mention it to my wife I still have not convinced her that I want her to duck me with a strapon ..

I need help convincing her...

I have tried the watching porn of wife doing husband ... even said "wow... love to try that", been caught wanking whilst watching it where Jenny has help me finished and fingered my arse.. but how the hell do I get her to use a strapon on me..

I can ask for anything sex wise to try... I feel too embarrassed to just say "babe.. lets buy a strapon and fuck my arse will you".. I suppose deep down I am worried she will think I want a real cock .. but i don't... i have no wish to have a bloke fuck me .. just my wife dressed in latex and a 5" cock protruding from her