Tell me I have great tits. Tell me you like the smell of sweat. These are small things that I can believe and I will believe them more if you show me, and believe me, all I want is to believe. Show me how you stroke your cock when you wake up in the morning and you have a little time.
I don’t use public showers i.e. in gyms or swimming pools that require a membership and prefer not to piss openly in front of others (actually I can’t) so any penis ‘flashing’ my friends might have been subject to has been merely coincidental and unintentional and left unmentioned.