The cleavage of two fat rolls (roehls) often mistaken for the vagina when having intercourse with an overweight female (fat girl). In situations where the female has one or more mega roehls, the best way to avoid the mega roehl is to throw flour on her and find the wet spot. Although mega roehls have a fair amount of moisture, frumunda, and stank, it is usually sealed by the exterior Mega roehl (mega roll). Therefore, the odds increase the vagina will be the most distinguishable wet spot. If you're lucky or experienced at hogging.
It felt so good until I realized I was fucking in between her fat rolls and not her actual pussy. Beware the Mega Roehl!