To illustrate this, Tom (my friend), recounted the tale of when he and Cass (his girlfriend) were playing a card game. He can't recall the game, not that it matters. It could have been Magic, Happy Families, Uno, or even just Gin Rummy.
Whatever the game, it was Tom's turn, and he drew a card. Unfortunately, it turned out to be something he most definitely did not want or need. Tom let out an exasperated noise and grimaced. Cass then assumed a comically lofty expression and berated him with this:
Obviously punning on the proverb 'don't look a gift horse in the mouth', Cass then enjoyed the sight of Tom laughing and spluttering.
For my part, I seem to be channeling a mix of Cass and Julie, because I was mixing both the original and Cass's version in my head and coming up with a mental image of a terrified and disturbed horse.