I was in a similar situation recently. I was at the grocery store, and the bag boy had his hand in his pants. Being at a place of work it was totally disgusting. I told him that was nasty and he gave me a smirk.The young men I have seen do that have no tact whatsoever. When I was younger It did not phase me. Now that I'm adult, it repulses me. I guess they have their hands down there for a reason. A reason that I dont want to find out.
Gobblemeister
A man's crotch is always warm.
Some men put their hands on their crotch because their hands are cold.
It's not all that uncommon, especially if it's dark near winter.
Most people won't do it in public but it is the UK so the standard is probably much lower.