Stupid is an adjective meaning lacking in intelligence. (See Stupidity)
Stupidity is the property a person, action or belief instantiates by virtue of having or being indicative of low intelligence or poor learning abilities. Stupidity is distinct from irrationality because stupidity denotes an incapability or unwillingness to properly consider the relevant information. It is frequently used as a pejorative, and consequently has a negative connotation. The term has fallen out of favor in medical journals as it is seen as a generic term used to describe a wide variety of conditions.
On Last.fm, the "stupid" tag is often inserted by trolling individuals who do not like a band, group, act, or musician, but cannot make a logical argument as to why they do not like them. Thus they mark them as "stupid". .
