1) A species of citrus plant that, depending on variety, produces orange, yellow, or green fruits with a bitter-tasting skin and a pulp which ranges from mildly sweet to very sour. Lemon trees are grown in tropical, subtropical, desert, and some temparate regions.
2) An erotic or adult fan-story about an anime or videogame character which was written by some sick pervert for the purpose of providing wank material for the Wapanese and the fanboyotaku who frequently attend cosplay conventions.
1) Lemon beverages are a popular drink during the summer.
2) The fanboy had a staggering collection of lemons on his shelf, next to the crate of hand lotion and 12-pack of toilet paper.