The 'He's probably thinking about girls' meme, also known as 'I Bet He's Thinking About Other Women,' features a stock photo of a couple lying in bed with their backs to each other. While the woman's internal monologue suggests she is suspicious of her partner's fidelity or wandering mind, the man is actually depicted thinking about something completely unrelated, such as video game lore, historical facts, or shower thoughts. Rising to fame on Reddit and Twitter around 2017, this format perfectly captures the humorous disconnect between social anxiety and the often-ridiculous reality of what people are actually pondering.