Betting Taboo

[Bad Beats]

What is your one betting taboo? I will start off. Everyone has one by the way. I will never bet for or against any college that has St. in front of it. What is yours?

 

[77sticks]

I will never watch an NBA game on tv. :nono:
I would much rather take a nap, shower, watch a 24 hour clothing or jewelry special on QVC