Yes, you see some crook looking people if you hang around reception long enough, which is probably not surprising given that some punters are punters because mainstream relationships are unlikely to occur.

I've often wondered how the girls deal with 10 "normal" customers in one session let alone the reprobates.
When I asked a well known Ginza lady recently how she deals with it all she simply said : I lick and I suck and I lay there....

Love that old expression from OP... Face like a dropped pie