Gwyneth Paltrow (with remarkably shiny, oiled-up legs) joined Conan O'Brien Thursday night, and the two bonded over their kids and did some butt exercises. (An hour later Jessica Biel was working out with Jimmy Fallon)
Both have 3-year-old sons, and Gwyneth described her son Moses as a "sensitive thug" rap lover who likes the music of "Uncle Jay," known to most people as Jay-Z. She said how the toddler loves the video for "99 Problems" (lyric: "and the bitch ain't one") and thinks "any white person is his dad" and all rock music he hears is that of dad, Coldplay singer Chris Martin.In the second segment (legs having been wiped down and appearing less shiny) she talked about her website/newsletter GOOP.com and the exercises she has there to boost your butt, which led to a demonstration by Conan and a butt grab.
WATCH FIRST PART (Shiny legs and kids): WATCH PART 2 (less shiny legs and butt crunches in the last minute):
Follow HuffPo Entertainment On Twitter!