Barbarella for me, too. Only for me, it was the orgasm-inducing piano/organ.
Big Man on Campus, with this babe:
NB: NSFW! :o
The song: “Beauty’s Only Skin Deep.” Oh, yeaaaaah! 
Vividly, it was The Collector - weird shit film I saw on tv at a pretty tender age. Gawd bless the BBC.
Maybe Ann Bancroft making herself available to Dustin Hoffman came soon after, and so most probably I.
I believe Equis is better in the boner bracket.
The first one I remember was Marlon Brando in Streetcar – I didn’t realize it was a rape scene 
And also The Hunger – David Bowie, Catherine Deneuve and Susan Sarandon as sexy vampires 
I’m just surprised so many of you actually remember. The best I can do is the first time I actually saw nudity, and, even then, I don’t remember the name of the movie. It was something I saw on one of the premium channels, which my VCR had a weird way of cleaning up. I remember being shocked when they were doing the clothing drop scene for a shower, and then the camera didn’t pan away. The next time I saw boobs, I recorded it, and found out that it was perfectly clear, with sound, once I actually recorded.
What I remember about the movie is that the guy had a mustache and reminds me of Burt Reynolds, one blonde girl with normal boobs who liked to take baths a red head with almost comically large boobs and a figure to match who liked to hang out topless at the pool, and the fact that they made a big deal about a cock ring. I don’t think it actually showed sex directly, but I could be wrong.
Sounds like Kitten Natividad. :o
And I just finished watching it on TCM !!!
And in an odd, sexy-woman-on-the-big-screen-twist, Scarlett Johansson plays Jenny Agutter (as Councilwoman Hawley) in “Captain America: Winter Soldier”
My vote goes to Jennilee Harrison, aka “Cindy Snow”:
Slave girl Leia in Return of the Jedi put a funny feeling in 9 year old KJ’s belly
Labyrinth - something about Bowie, being all domineering in tights that left NOTHING to the imagination…man if I had a baby brother, I would have definitely given him over to the Goblin King…
In the novel, Jareth mentions she is “too old to be turned to a goblin, but too young to be kept by him…” I remember thinking, well…how old do I have to turn…? I was nine or ten. I had been fascinated with “dirty” scenes in movies until then, but that was a first runaway infatuation/crush.
I could have picked worse than Bowie, for sure.
Thanks but I don’t think that’s it.
The movie you mentioned is from 1989 but I was in primary school when I saw the video so it cannot be later than June 1986, and probably earlier than that: 1984 is my best guess but it could be even earlier.
This one then:
I guess I confused Kimberly and Gwen. Anyway, I remember this scene. :o
Kimberly was in this one too, with Sylvia Krystel. Couldn’t stand up until ten minutes after the movie ended! :o
Risky Business was the first to come to mind.
May we ask…Tom or Rebecca?
Not that it really matters – it’s all good!
Just don’t say “Guido the killer pimp.”
Thanks, I’m almost certain that’s the one. Talk about a blast from the past…
+1