1 definition by Giant Stalin
A trat is something or someone that annoys or displeases you in any way. Originally meaning someone who uses long words incorrectly (like the man who coined the term, a guy named Louis, who is now known as Tratman), such as 'That was going sub-sonic'or 'Wheres the ejaculator seat?', its meaning has now broadened.
by Giant Stalin March 5, 2006