To the OP, do your friend a favor. Invite him over for drinks, get him good and relaxed, then reach in their and check how large his is.
Such a seminal topic, maybe we need a sponsored thread for "prostrate" health. Lots of traffic sure to come...and give Tango6Alpha another arena to call people out for challenges.
Some folks around here have their heads shoved so far up their arse I am sure they know exact size...
I thought getting up in the middle of the night was a good excuse to check the markets?
The whole massage thing to stay healthy seems bogus to me. Is it really any different than taking a dump? Finger/tool/log, isn't it all the same?