Never trust a man, who when left alone with a tea cosey... Doesn't try it on.

When adults forget how to play

This joke works because it names something we all recognize but rarely admit: curiosity doesn't stop when we become adults. We see a tea cosey sitting there and part of us genuinely wants to know what it feels like on our head. Most of us resist that impulse out of self-consciousness or propriety, but the impulse itself is still there—that childlike urge to experiment with ordinary objects just to see what happens.

Connolly's real wisdom isn't actually about tea coseys. He's describing someone who's kept their sense of play intact, who hasn't calcified into pure seriousness. These are exactly the people who tend to be better company, better problem-solvers, and honestly more interesting to be around. They haven't outsourced their curiosity to "what's appropriate" or "what I'm supposed to do." They still try things on, metaphorically and literally.

The flip side—the warning—is subtle. The truly trustworthy person isn't the one who rigidly follows rules or worries constantly about appearances. It's the one balanced enough to be both playful and responsible. If someone never breaks the rules even for something harmless and ridiculous, there's something a bit off about their judgment. They've let fear do their thinking for them.