I would not call that birth control, cause even if the guy pulls out but cums all over, you can still have the possibility of getting pregnant. I would say that is not a good way to prevent getting pregnant at all girl!
when i started on the pill i used this method as well as the pill and i got pregnant so yes everything people tell u is true. just because the final "spurt" of sperm (<——-for lack of better words) may not go in you , as someone else said in another post he is leaking the whole time and this pre-sperm is def able to get u pregnant. Do not rely on it at all it is not birth control whatsoever!!!