The men of the Fatherland are gentleman, and they liked to wear big hats with wide brims. They would tip their hat when they see a pretty lady on the street. If they thought they had a chance with her, they would doff their hat completely. Lay down their hat for her. Right on the ground. But there is a hidden meaning in this. It means he wants you to suck his cock.
You see, women had become accustomed to kneeling before their man and sucking his cock whenever he wanted, — but spending 20 minutes or so on your knees, on the pebbly terrain of the fatherland, can result in sore knees! Plus, it’s a bit harsh to always hear your man order you, “come suck my cock, bitch!” So the gentleman of the isle began wearing soft felt hats, that they could toss on the ground right before their feet, for their lady to kneel upon. That way, no more sore knees!
And it became such a custom, that the men no longer had to bark harsh words, they just doffed their hat, dropping it to their feet, and their lady knew what to do. That was the code.
So like in old westerns, you see men everywhere doffing their hat, and their lady giving them a blowjob on the streets. A man might keep a hand on his holster, in case anyone tried to interrupt them.
If he didn't know a lady well enough, a man would just tip his hat to a lady on the street, which was code for, ‘I'd sure like to…, if you're game.’