What is it?

Justin Timberlake & David Archuleta have long ones.

Taio Cruz & Bruno Mars surprisingly have short ones.

Ke$ha, JoJo, Adele, Rihanna & Madonna don't have it.

Tiger Woods uses his alot.

Lady GaGa apparently seems to have one.

Typical Asians have short ones.

So, what is it?

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If you thought penis, you're a pervert.

It's SURNAME.