There is a very sensual and unique thrill having one's ass or buttocks massaged before they become penetrated by an anxious and fully erect cock! The soothing massage helps to prepare the willing sphincter (ass-hole) for the forthcoming thrusts of manhood!
The masseuse (man who is doing the massage) often uses this time to explore the buttocks prior to inserting his now-raging penis into action for the mutual pleasure of both sexual partners!
The massage usually separates the bubbly and fleshy buttocks cheeks thus exposing the actual sphincter and allows the exploring man to fully view the object of his thrusts before he commences. This gives him a complete idea of what he will soon experience!
This also provides him the perfect opportunity to praise his partner's anatomical greatness and to help him relax in anticipation of what is to soon follow!
Rimming (the foreplay act of kissing, licking, tasting the anal cavity) gives to the upcoming top a chance to orally stimulate the soon-to-be bottom's anal opening and encourage his receptiveness to the top's generous erection!
The "tongue-massaging" helps to excite the bottom's ass nerves and to heighten the physical desire to being fucked by the top. This adds pleasure to the satisfaction of both sexual partners!
The experienced top knows for a fact that the deeper his tongue is inserted into the potential bottom ass-hole, the greater the stimulation for both men!
The extra enthusiasm that rimming gives for the bottom is truly a just reward for the top as an excited bottom provides added pleasure for the routine thrusts of the inserting manhood muscle!
Versatility matters, guys! Be cool!
Keith Cuffee