When you eat spinach and get this nasty dry feeling in your mouth.
"mom i don't want to eat my salad, i'll get spinach teeth again.
by popcornshrimp March 11, 2010
The fuzzy/gritty feeling on your teeth that you get from eating raw or cooked spinach. The feeling is caused by oxalic acid crystals that coat your teeth, not by iron as many believe.
I got "spinach teeth" after last night's dinner.
by Fred Parks December 28, 2008