A couple of guys in their 90s decide they want to relive the glory days. So they get a motel room with a couple of beds and book some ladies. The guys make sure the girls know they are mature so there won't be any surprises.
The girls arrive, everyone pairs up and climbs into their respective beds. Out go the lights and for a while, can't tell much about what's going on. Then one of the women groans. The other lady asks, "you okay"? The first one replies, "yeah, this just one of those times when I can feel old age creeping up on me..."