1
The letter you use to replace your Gf or Bf's name when you're too lazy to spell it right and too proud to say it out loud
Yo, I'm still with the 0 number, no way I'm spelling her name again.
He texted me 0 number, I asked who that was, he said I'm the 0 number.
I told my mom I'm with the 0 number, she said that's not a real name.