I'am thinking of taking testosterone pills?

i heard testosterone pills or other forms of taking it make penis/ gentials smallers. But i want to but on muscle and grow. But it says on websites that natural testosterone makes penis bigger. i also want other effects of testosterone that weight gain cant provide, like grow and other stuff. Iam confused on this... show more i heard testosterone pills or other forms of taking it make penis/ gentials smallers. But i want to but on muscle and grow. But it says on websites that natural testosterone makes penis bigger. i also want other effects of testosterone that weight gain cant provide, like grow and other stuff. Iam confused on this can someone shed light on this?