Humans are and will always be fascinated with sex, though over time the public's attitude towards it can shift and trends arise. For example, there are periods of somewhat sexual revolutions like the Swinging '60s or the 1920s flapper era.
One sexual activity that remains a bit of a puzzle is the threesome. A threesome is an act that appears not too uncommonly in pop culture, but that is still rare enough to not be considered normal. It's a fantasy many mention in random conversation, but not a topic that comes up easily. The most iconic threesome is a man having one with two women. Pop culture has plenty of these, but it does a fair job of showing various types of threesomes that arise from different scenarios. To give you an idea of how threesomes are represented in one branch of pop culture, television, here are the top 10 threesome scenes ever to air.
Honorable Mention: Shane and two girls on Weeds. The 14-year-old son of a free-wheeling mother brings home two Goth girls to help him fulfill a fantasy. The idea of people so young having this experience seems so far-fetched to me but, in a way, it works. Shane is so young, innocent and vulnerable that you can't help be amused. The fact that the girls research it, proving their own inexperience and how much planning was involved, and the blunt pep talk Shane gets from his brother also contribute to making it a bizarrely entertaining situation. For the record, nothing is really shown but in a future episode, Shane has an STD scare from the experience.