When a man lies on his back and awaits for his gay lover to enter him in the missionary position. The lover then takes the other man's balls and lifts them with his hand so that he may enter the fudge box. Once the erect meat whistle enters the log pipe, the balls then drape on both sides of the shaft, thus completing the "Mexican Saddle Bags."
Wow, I gave my boyfriend some "Mexican Saddle Bags" last night. We then watched the news and brushed our teeth before going to bed...oh yeah, I also came!
Sheesh! I have seen this phrase misused a few times now (even in Roger Mellie's Profanisaurus!). Let me clear things up:
Saddlebags is a word to describe the bulging areas of fat on the upper outer thighs of ladies, in a way that resembles saddle bags being carries on a horse.
The expression was used in Ace Ventura: Pet Detective. I can't remember exactly how though. It was something along the lines of:
Melissa Robinson claims she isn't fat. Ace says something along the lines of "yeh, whatever you say, saddlebags!"