somone who is very annoying, is getting on your nerves and wont stop. this word is used when somone is being obnoxious. also used for people who are acting stupid and think they are funny even if they are not, special when they dont stop.
guy- dude stop being a gatuso!!!
ed- HAHAHA! whos being the gatuso now?
guy- my brother he keeps interupting the tv show. he's a real gatuso.
brother- dont call me that!!
guy- ok then stop man!