Had a 10mm deep socket the other day with a 1/4" socket size. Couldn’t find a 3/8", so I found an old adapter and when loosening the 5th bolt on my intake manifold, got the old “hmm… that shit is moving to free to fast”
Thankfully a small screwdriver could poke the 1/4" adapter piece stuck in the socket out, so I can live to make the same mistake another day.