Etymology
Coined by Reddit user u/skeyer in 2018 (see quotation below).
Noun
morning bean (uncountable)
- (neologism) A spontaneous swelling of the clitoris during sleep or upon waking up.
[2018 June 10, u/skeyer, “TIL: The female version of morning wood (or morning glory in Australian,) is "nocturnal clitoral tumescence."”, in Reddit, r/todayilearned, archived from the original on 29 December 2023:I've always called it morning bean]
2018 June 28, Sophie Aubrey, “What you didn't know about what happens to your vagina when you sleep.”, in Mamamia, archived from the original on 2023-11-01:It can be confusing for women, and the more we understand our bodies, the more reassuring it is that what we're experiencing on a day-to-day basis is completely healthy and normal. It's just your morning bean saying hello.
2023 May 12, Sarah-Louise Kelly, “Yes Really – Women Get Morning Wood Too”, in HuffPost, archived from the original on 2023-12-21:Apparently women can get 'morning bean'.
2023 May 23, Jade Biggs, quoting Karan Raj, “What is 'morning bean'? TikTok doctor explains why you might wake up with it...”, in Cosmopolitan, New York, N.Y.: Hearst Communications, →ISSN, →OCLC, archived from the original on 2023-12-26:As opposed to the penis, most of the clitoris is internal – it's about four inches long on average – so most of the morning bean is not visible.
2023 November 7, u/yammymaam, “Female members, do you still experience nocturnal clitoral tumescence?”, in Reddit, r/PSSD, archived from the original on 29 December 2023:I was never aware of having morning bean before so if it's happening now, I am not aware