PEanist based on my experiences, I respectfully disagree…
When the tunica is stiff, as in the presence of the “hormone”, it seems MOST resistant to stretching. There are times when I try to stretch and can tell there is an element of sexual excitement involved and I get very little stretch feeling or “pain”.
However, when the tunica is in it’s most relaxed state, ie AFTER ejac when the “hormone” is at it’s lowest, the tunica is much easier to stretch and does so, providing a whole BUNCH of stretch feeling and “pain”.
Twatteaser: the man, the myth, and the legend in his own mind.