Part of the fun of having survived two little brothers and a divorced father when I was a teenager was developing a sensibility for bathroom humor. It helped me get along quite well with the 8-year-old son of a woman my dad dated seriously for a while - he would belch & fart to try and get me to squirm. I rolled my eyes and told him he could do better. The kid laughed … and never belched or farted in my direction again.
It makes me a great favorite with my younger cousins and all the nephews.