[M4M/A] Older Muscle Daddies Get Bigger Too [Dom Top Speaker] [Sub Bottom Listener] [Extreme Muscle Growth] [Established Relationship] [Extreme Size Difference] [Pseudo-Science] [Massive Dick Penetration] [Cum Inside] [Cum Bloat] [Belly Inflation] [Muscle Worship] [Kissing] [L-Bombs] [Growling] [Incidental SFX] [Fucking] [Rough] [Multiple Check-Ins] [Happy Ending] [Relief] [53:38]