"Window licker" wasn't a phrase I had heard until Skiddy used it.
Then, I adopted it to refer to him, standing on a bus, with his pecker out, and shouting at passengers to tell him the time.
I found that a funny visualisation of Skiddy, and the way he acts on this board, and I am sure some of you found that amusing, too (even though some might not admit to it).
True story... I used that image because something like this actually happened to me, when I was in my early twenties. I has on a bus in London, and a smelly old tramp shambled onto the bus and stopped near to where I was standing. He was either pissed or suffering mental health issues, and he began ranting at everyone, including me. Everyone tried to avoid his gaze. Then, he bent down to me and began screaming in my face, "Tell him the ****ing time!" over and over again. I didn't know what he was on about, until I had the never to turn and saw him holding his knob, which was sticking out of the open fly. I didn't know what to say, so I simply said, very calmy, "Sorry, I don't have a watch." At which point, he shambled along the aisle and started ranting at some women, who got up and hurried off at the next stop with the tramp shambling after her.