are you a boy or a girl and what is your mom like?
this is important because depending on how rational your mom is, she might think
'oh boys masturbate, i already knew he does this, all of them do'
'oh my god why is she doing that, i never did that, is she a whore, where did i go wrong'
'oh i like to flick the bean as well'
those are the options going through your moms mind