#jokes

My little one said something inappropriate as a joke. I am mortified! How do I stop this?

The other day, a new friend's mom brought him home. When she was taking him out of the car he said “te quiero dar un beso en las tetas”  I was mortified (even though the mom was a good sport and knew he was doing it to get a laugh and he was laughing hysterically).
I can’t wrap my mind around him saying something like and I’m petrified he will continue to say inappropriate things. I don’t want moms to not want him around because he’s a bad influence. I also don’t want him saying things like that. Ever.