It's the oldest trick in the book for a reason.
Or to paraphrase a really old joke: Men have two heads but only enough blood to run one at a time.
The real joke is the sexism that says this is somehow uniquely a problem with men. Women do plenty of stupid things because they’re horny and/or lonely. That whole ‘little head’ thing seems like a bit of harmless cheek until you start looking at it in the broader context of sexism and gender roles, then it gets a lot more tedious.