fart in a mitten
n.— «We had a great one back in my social service days (and no, I did not work with Jane Addams at Hull House): “That’s about as effective as a fart in a mitten.”» —“Re: Sometimes I can’t supress the typical female feelings like a sense of colours and creativity” by Frank M. Miller Usenet: alt.culture.fabulous Feb. 11, 1999. (source: Double-Tongued Dictionary)
Further reading
The adjectives canine and feline refer to dogs and cats. But how does English address other groups of animals? Plus, cabin fever has been around much longer than the current pandemic. That restless, antsy, stir-crazy feeling goes back to the days...
One secret to writing well is … there is no secret! There’s no substitute for simply sitting down day after day to practice the craft and learn from your mistakes. Plus, childhood mixups around word definitions can lead to some funny stories...