Youngest son occasionally had problems with a "b" sounding more like an "f". We enjoyed watching dirt track races and one driver's name was "Bucky". Whenever he was out on the track, my MIL would yell at my son "Nick, who is that driver?" He's loudly yell "IT'S %UCKY!!!"
Another time a group of us sitting in the stands were sharing a big bag of salted peanuts in the shell. My boys had to go to the bathroom, so my son carefully set his peanut on the seat, looked at everyone else in our group and warned them "No one touch my nuts!" The whole crowd around burst out laughing.
My youngest would call a wash cloth a "car wash". (Interesting since I called it a "cloth off" when I was little).
My youngest son would also use the bathroom, loudly drop the toilet lid and yell "OUCH!!" He was probably 10 or 11 when he started doing that. He would also bang on the bathroom door and yell "Hurry up, I'm prairie doggin it out here!" (He was a little older when that happened)