The funky knot that occurs in the back of a girl hair (assuming its long) after too much missionary position sex.
by delusi0n December 5, 2004
by nervous_farter April 20, 2003
A tangled mat of hair in the central region of the back of the head. Most commonly displayed by human females after missionary style intercourse, the knot occurs from impassioned head thrashing on the pillow, bed, floor, kitchen counter, etc.
She had a big ol fuck-knot when she got to work this morning, I'm jealous of her morning wood wake up call.
by ZillahRae October 16, 2008
by Zero K Nexus October 22, 2019