Noun; A beard made of pubic hair and secured to the person's face by semen. The Beard of Lincoln is "given" by a man that ejaculates on their sexual partner's chin and cheeks, then rips a handful of his (or their) pubic hair and sprinkles the hair onto the semen. The semen secures the pubic hair to their face and resembles a beard.
"I busted my load on her chin, ripped out a handful of my pubic hair and threw it on the load." You would reply, "Oh man, you gave her the Beard of Lincoln."
by iceman 69 December 23, 2009