Common Sense Note
Parents need to know that How I Met Your Mother is an entertaining, refreshingly kooky sitcom focused on love and relationships, with a large dose of sexual-themed humor. There's plenty of flirting and innuendo, especially from one character who constantly tries to seduce women and then brags about his conquests. One of the main sets is a bar, where the gang gathers to drink and talk. Expect some swearing, including "damn," "bitch," and "ass."
Lots of innuendo and references to/discussions about sex, especially between amorous Marshall and Lily. Some fooling around on screen, and lots more is implied off screen. Characters are shown in various stages of partial dress, but there's no actual nudity. Barney is a serial womanizer who lives for casual hookups and avoids commitment.
Occasional comic pratfalls, etc. A running joke involves characters slapping each other.
Language includes "damn," "bitch," "hell," "ass," "bastard," "bang," etc.
Friendship and love are important on this show, which often examines the ties that bind its five main characters to each other -- and to others as well. Two are married to each other, and their solid relationship is strong enough to weather the bumps of sitcom plot twists. Other characters bounce between periods of being in relationships and being single, and they turn to their friends to help them recover from the inevitable bruises of their up-and-down romantic lives.
Syndicated versions of the show's episodes sometimes include retroactive product placement (background TV screens showing clips from upcoming movies, etc.).
Drugs / Tobacco /
The main characters frequently convene for drinks at a neighborhood bar. Some references to being drunk and making poor decisions while intoxicated.