Note 7 — VULGARISM > COLLOQUIAL ENGLISH
Reading edition
Cf. the synonymous huffy, grumpy. Humped > humpy; dotted > dotty, etc. are vulgar formations.
I think it ‘à propos’ to quote here the following, well-known story:
A sentimental young lady once went into a new music shop, where the young proprietor had done very little business, and asked sweetly: »Have you got the ‘Bleeding Heart’?» »No», was the answer, »but I have got ‘the bloody hump’!»