The length of time after a male orgasm. Symptoms include fatigue, drowzyness, dry mouth, sloth, and exuberance.
(girl): so that was some great sex-(interrupting male): Shh...Shh..Shh it's Ryan Time
When your wife or girlfriend goes away for the weekend and you spend your time masturbating and drinking signal barrel Jack Daniels
Your friend says "My wife is leaving town for the weekend so I need some Ryan Time"