Innuendo is pretty common. The couples often talk and joke about their sex lives and experiences, and the brother, Andy, often refers to "knockers" and "jugs" when describing a woman he finds desirable.
There is a lot of veey sexualized women in this show, including women dancing around in bras and underwear occasionally and the main character dressing up her sister for her own husband, its definitely not a "family" show.
There's a episode where cherly is selling s*x toys and an episode where there's a male strip club.