Of a girl getting pregnant if you cum inside her when shes on birth control?

100%. Birth control was made to trick boys into cumming inside of the girl.

Roughly 1%

Seeing as we all want to get preggers and all Great big barrel of laughs that would be.

real men cum in chick mouths, suck the cum bitch ooh, ohh suck the cum out

real men cum in the but

..of another 'real man'

Pretty slim if she is taking it the proper way as advised by her doctor.

Depending on the brand, 0.9%-5%.

Check MrMojoRisin's stickied thread, as it provides more in-depth details.

Fuck guys... I always blow in her.

So I have a 1% chance of getting her knocked up? Never knew this.

My semen is so potent I basically have to cut the bitch's ovaries out and don a lead lined condom before I even think of unsheathing the old snake wand if I don't want her to be sick in the morning like even just the week after.