Screw the rules!
Irelia, Akali, Katarina and Vayne had a foursome >> Irelia gave birth to a Michael Jackson Shaco. Q.Q
WHAT HAVE YOU DONE OP?!

Fiora knocked up Cho Gath... Which led to the abortion of a little mundo.

Blitzcrank sparks Syndra and Syndra gives birth to Darius. Darius isn't as skilled as his parents in the grabbing hence his AoE cone grab. Though Syndra isn't very skilled too as she cannot grab the champions.

^

Damn, I hate Teemo.
Ahri and Lux adopt a little Darius and teach him the ways of AP Mid. He is shunned for the rest of his life.

Katarina knocked up Swain

And thus black Shaco who likes to sneak into kid bedrooms was born.

Anivia already lays eggs, so no big deal there. But... with Syndra. There is no stopping this creation. o.o

Ryze has Kassadin with Taric.

I'm done.

Shaco knocks up Lee Sin (o.o)
Karthus was born