Because it is a private part of the body, people don't like it.
Lack of self-confidence.
Touching your butt will not make it grow bigger. There are exercises that work your gluteus maximus which can increase the size of your butt.
dont sit on it all day and do some frickingexcersise
fear of food touching.
Analophobia
no, that it just a myth
a butt and a di**\
Clavicaphobia is the irrational fear of touching or seeing collar bones.
If you want it to be. . . Wait is this hand on skin or on panties?
by touching your butt
strength ,fear,ignorance ......
The closest thing to a phobia of a child touching you would be Pedophobia which is the fear of children.
Food or eating- Sitophobia or Sitiophobia. Food- Cibophobia Touched, being touched- Aphenphosmphobia, Haphephobia or Haptephobia or Chiraptophobia Fear of food touching would be: Brumotactillophobia