The tanline that men have; tan calves and knees, but extremely pale thighs to the point of hilarity.
Jon’s tighty whiteys really showed of his manline.
Manline: define #2
tan lines on a man.
After being in the sun all day, I took off my sandals and noticed I had man lines on my feet.
Manline: define #3
A sock tanline made out of dirt.
Woah, check out that brother’s crazy manline. He must have been turning it up in the woods.