EMILY Atack admitted all actors have been a bit "too excited" when filming sex scenes with her.
The I'm a Celebrity champ, 29, also revealed she can count the number of times she's orgasmed "on only one hand".
The TV star made the shocking revelations during her appearance on Shopping With Keith Lemon.
The confession happened as Keith asked Emily what it was like filming the now-famous Inbetweeners sex scene with co-star Simon Bird.
The actress played hottie Charlotte "Big Jugs" Hinchcliffe in the series from 2008-2010 - but it isn't only the British sitcom the star has stripped off for.
She has also filmed raunchy scenes for Hollywood movie Love in Florence and 2015 comedy Almost Married.
Asked how she felt about doing scenes of a more X-rated nature, she dished: "I don't mind doing scenes like that at all, you just get to lie in bed all day with a nice boy, it's great."
Cheeky Keith then asked: "But what happens if the boy gets a happy on?"
Emily explained: "Well do you know what they say, the men, when you're about to do a sex scene, they go, 'Look, I'm sorry if it happens and I'm sorry if it doesn't.'
"Because they don't want you to be offended if it doesn't happen, because I would be f***ing livid."
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And when Keith asked if the lads did get a "happy on", Emily dished: "Yeah."
It came after the star said she fakes orgasms "all the time".
She told the host: "Do you know, I spend 90% of my sex life faking it."
Asked why, she said: "I fake it all the time because, number one, I don't want them to feel bad... are we actually talking about this?"
She then added: "I can count on one hand only how many times a man has..."
One man who might not take Emily's revelation lightly is her new boyfriend Rob Jowers.
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