67 Protons 

A pun referring to the element in the periodic table Holmium, which has the symbol Ho. This can be used as a sly comment for calling someone a Ho.

"yeah? well your girlfriend has 67 protons."

67 Protons by mwahahahaha9630 November 8, 2009

67 Protons 

Basically, a girl wth 67 protons is a Ho. It can be used in discreet ways.

This refers to the 67th element on the Periodic Table of the Elements (holmium) which has the short form of Ho.

Person1: Hey look at Carley over there.
Person2: Now there's a girl with 67 protons.
Carly: Hey you guys. What are you talking about?
Person1: Chemistry

67 Protons by $e9a November 16, 2009

Proton 67 

Term used for ho because 67 is the atomic number for the element Holmium, and the symbol for Holmium is "Ho."

Did you see Nicole trying to look all cute today with her short skirt and high boots? Who's she trying to fool..everyone knows she's the biggest proton 67.

Proton 67 by Megsss May 26, 2012