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!