Labanus= when the Labia and anus meet due to lack of a taint. usually in larger women, but can be used if the woman is packing some serious beef curtains.
Friend#1=hey man, i heard you slept with ol' girl?
Friend#2= yeah, i think i did?
Friend#1= well, didn't you get up in that, i heard its pretty meaty?
Friend#2=meaty? that chick had a Labainus!!
Friend#1=oh well, at least you can say you did her both ways!