I’ve never had an issue just saying “you have something in your teeth” or “your fly’s unzipped” or “you have some gunk on your face”, most of the time accompanied by a small gesture mimicking what to do. Straight-forward, nonchalant, not awkwardly beating around the bush.

Another tip (long-distance hiker here): buy some good wool socks (even if it’s hot weather). Darn Toughs are my jam, and I can guarantee from first hand experience that their claim to prevent all hot spots and blisters is spot-friggin-on. $20 may seem like a steep price, but they more than make up for it with how long…