This week on Channel 4, we watched a cheery 58-year-old American engineer called James going on a first date. He was meeting Harmony, an extravagantly shapely blonde who was obliging enough to be wearing a low-cut crop top and tiny shorts, and who greeted him with a charming smile. After a spot of small talk and a dumb-blonde joke, she then alternated between assuring him how great he was and inviting him to masturbate over her.