Lime

A Fanfic that hints at explicit sexuality, but does not actually show it; "softcore" vs. "hardcore". Where Lemon would be the equivalent of an "NC-17" or "X" film, Lime is a soft "R". Lemon is the Spice Channel, whereas Lime is more like the Red Shoe Diaries.

Also known as "artificial lemon flavouring".

Generally the sexual activity may simply be heavy-duty making out that jumps to the morning after, or in some cases sex described very mildly - not necessarily IKEA Erotica, although it's an option, but close. Most Lemon writers start off with Lime fics and work their way up, frequently one-handed.

As a bit of trivia, it's worth noting that limes are not less sour than lemons. However, they do contain less Vitamin C.