I’ve been growing out my beard recently. Similar to women with long hair, maintaining a beard can be a lot of work. Typically, if I see someone else with an epic beard, I try to acknowledge it. Clearly they care about it.
Also, when I see a dad out with a young child alone, if they are trying at all, I will try to acknowledge it. I feel like most dads are in a situation where they are uncertain about what they are doing. Let me know that they are friggin’ nailing it.
That is a tough situation.
How about “Jesus, put the weights down occasionally and leave some pussy for the rest of us!”? It acknowledges your effort, but is clearly they are not trying to hit on you.