hi there my son dose the exact same lol
loves to ride bike all over the house
but sometimes he likes to greate
marks on the floor lol n when told not
to he runs in to walls n get this their white!
n he leaves black marks n just refuses to stop!
yeah sometimes its ok but when i say no he dosen't
think he should stop! so is your child autistic also!
would like to chat sometimes n exchange stories lol