yeah... but nothing in an "extreme sexual" act, but more of a funny thing maxis puts in there just to make you laugh, I guess... but in the end, yeah, if I had kids, I'd let them play it... though... they'd have to be 13 years old to play it.... }>:^)
(maybe)
though... I first got into the sims 2 (I play the sims 3 of course); back when it first came out... so... I was about 10 years old at the time... just saying, but some kids are different; you'd have a better judgement there.
In the end, the only "sexual themes" are, kissing, flirting and "Woo hooing;" which is to replace the word "sex".
The only warning is, is not the game itself, but the mods that people can download. Some are inappropriate, and or porn-related modifications; there are also nude patches that uncensored the censored bar. So that's the only thing that your mom should be concerned about... but you wouldn't do any of those things... would you?