Shelly - if take things out of context and you can find whatever you like really can't you 
Yabu, he is 11 not a baby anymore. Kids that age swear, he didn't swear in front of you, you probably weren't supposed to hear it.
...the rest of the post...
Give him lines or something but for gawds sake don't cancel his birthday.
tbh if he is 11 and he said the f word i dont think that is all that bad, its to be expected at his age!
...the rest of the post...
really punish him but you arent going to stop him swearing he will simply learn when and where its appropriate, ie not around adults!!
YABU. All kids that age swear....
...the rest of the post...
yours just hasnt learned how to keep it out of ear shot yet
Most 11 yr olds swear when talking or writing to each other on occasion. He didn't swear at you?
...the rest of the post...
I think it's a harsh pusnishment for using that language with his friends. Overreacting will make him lose respect for you even more. If he actually swore at you, it would be a different matter.
So, Shelly - which of those posters said it was OK for kids to swear - which of those posters said anything different to you I've never heard DD(13) swear. I don't doubt for a moment that she does swear but she's careful enough not to do so in earshot of her dad or me
???