Looking for Answers to Online Questions

1. Where does online term 'Lemons' come from:

Most of you know that 'Lemons' mean 'sex stories' on Wattpad, right? 

- I know that since I joined Wattpad - but when I first heard that they are called like That - I was like 'Why Lemons? - not other fruit?... - Lemons as fruit are sour & hardly anyone Likes Them - & the activity described in stories of this kind is Rather Pleasant - so couldn't they invent a nicer name for that?' 

( If you also thought so - Keep Reading, cause I Finally Found the Answer for That!... - it took me A Lot of Time - but I did at last! - & I'll happily Share! :) )

*The name 'Lemons' came from anime/yaoi fandoms referring to a hentai anime series entitled 'CREAM LEMON'

- As I found out: This series was Released in August 1984 - so All the Teen Wattpad users & I most probably didn't know that - cause it was a Long time before We Were Born!

( ...I've never heard of that series so I didn't know that before! - did you know? )