Licking out

When a man performs oral sex on a woman

for a guy (or girl) to lick a girls vagina for sexual pleasure

British Army speak for describing something as particularly difficult.

To shove yr tongue up a girls pussy to give her pleasure. Tease the clit to get the best results. She'll come rivers boys. =

When a man performs oral sex on a woman

Lick out means to pleasure a girls vagina with your tongue. Could be male or female who does this with their tongue. This gives the female sexual pleasure, especially if you tease her clit.

v. lick out
to lick out is to put (male or female) a tongue into a vagina and lick the vagina and to make the tongue into almost a spoon (like a spoon and a jar of peanut butter)
until the girl cums