Why does tickling/laughter cause a sudden loss of baldder control?

its called stress incontinence. very common actually. Its when the sphincter to your bladder isnt as strong as it needs to be and when you stress this muscle (ie laughing, sneezing) a little urine will leak out. There you go...Why does tickling/laughter cause a sudden loss of baldder control?
As the focus of the mind is on the area being ';tickled,'; the concentration to ';hold the flow of golden yellow'; is lost, resulting in leakage.Why does tickling/laughter cause a sudden loss of baldder control?
Because when you laugh your body shakes including your bladder which makes you gotta go.
I'm guessing the nerves in your body are causing your bladder to lose control