Apparently the planets aligned just right

How could I forget?

And then Amy actually did it

She got close...

Well, now that the Doctor is a woman maybe you have more influence?

Excuse me? My milkshake brings all the boys to the yard.

... damn right. It’s better than mine.

I'd teach you, but I'd have to charge.

Well, how do Time Lord’s reproduce then? Amy got preggo you can’t tell me that was from the Sonic Screwdriver. Or maybe it was.

No, it was Rory. They did the do in the TARDIS, gosh, pay attention Janet.

So then... to make a Timelord (e.g. River Song) you just bang in the Tardis?

Well, Timelords were given their regenerative nature from millennia of time travel. Since River was concieved in the TARDIS while in the Time Vortex, she was effected.

OHHHHHH