Perfect timing
The quality of diamond jewelry when hits just the right light and achieves it's highest potential of brilliance.
Damn bro, your ice got perfect timing out here in sunny Miami!
perfect moment in time
A perfect moment in time is the instant a guy feels himself reach the point-of-no-return and have a c-spot or p-spot pleasure-gasm.
Ahhh ... My dick just felt a perfect moment in time when I blew my load with a dick in my mouth and another up my ass - and yet another sucking my cum-load out of my cock and swallowing it!