Does putting a laptop on your lap make you sterile?

May not make a person permanently sterile but heat is know to cause it. Puttying a laptop on a lap causes a significant increase in temperature around the scrotum. Even doctors advise men with fertility issues to wear shorts to reduce the hear around their scrotum. If you like working lying on your back and putting the LAPtop on your genital area directly then the exposure is even worse.