a stitch

a stitch

1. Someone who is very humorous or amusing. Oh, Lydia's a stitch—she had me laughing all night long.
2. A sudden, sharp pain, usually felt in one's side, as during strenuous activity. A: "Hey, I did run after the burglar!" B: "Yeah, but only until you got a stitch!"
See also: stitch
Farlex Dictionary of Idioms.

a stitch

1. n. a very funny person. Harry is a stitch. What a sense of humor!
2. n. a sharp pain, usually in the side. I got a stitch and had to drop out of the marathon.
See also: stitch
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • tickle (someone's) funny bone
  • stitch
  • not have a stitch on
  • have a gas
  • wrack (one's) brain(s)
  • wrack brains
  • checks notes
  • rack (one's) brain(s)
  • rack brain
  • rack one's brain
References in classic literature
(We forgot to mention that at the door they wanted to put off Porthos like the rest, but D'Artagnan, showing himself, pronounced merely these words, "The king's order," and was let in with his friend.) The poor fellows had enough to do, and did their best, to reply to the demands of the customers in the absence of their master, leaving off drawing a stitch to knit a sentence; and when wounded pride, or disappointed expectation, brought down upon them too cutting a rebuke, he who was attacked made a dive and disappeared under the counter.
The Man in the Iron Mask
This last hour my legs have been fainting under me; I've a stitch in my side like a red-hot iron; I cannae breathe right.
Kidnapped
Not a stitch in that embroidered letter but she has felt it in her heart.
Scarlet Letter