My 4 year old has been toilet trained for 2 years. He goes sitting down as at times he goes for number 2's when all he says he needs just a wee. So I want to keep it that way. However, he keeps weeing straight out between the toilet seat, covering his legs and trousers. I have been placing tissues between the seat and bowel to prevent him spraying out of the toilet. But now he's in reception class, he's wet his trousers in school by weeing out and refuses to use the school toilets....HELP any advise would be appreciated..