Stupid means lacking in intelligence or someone exhibiting stupidity.
Stupid may also refer to:
Stupid (band), a punk rock band from Brooklyn
Stupid (art movement), a group of artists in Cologne in the 1920s
Stupid.com, a web site
"Stupid" (song), the second single from Raven-Symoné's self-titled album
Stupid!, a UK children's television show on CBBC
You are the most stupid person because you ate soap!