Biggest age difference

Our very first couple we swapped with and the very first time I watched her get fucked was with a 62 year old man and my fiancé was 42 at that time.
He had to inject his dick using a needle and syringe with a drug to get it hard.
This was at Club Trapeze Atlanta.
Thats the oldest man she’s ever fucked.
I bet it was hard as a rock after the injection