Definitions by andy w. from cary n.c.

gladiator thumb 

raising your thumb way up in the air, and then turnin it upside down in a way as to demonstrate that something is unacceptable, or negative (thumbs down)

When asked if he wanted to go to the mall , the man replied simply by show of the gladiator thumb

gladiator thumb by andy w. from cary n.c. May 14, 2006