In Colombian slang, specifically Medellin, or around Medellin (The paisa zone) being a pato is a slang used among young
people.
If you do something really stupid or if you approach a problem with an unpractical and/or stupid or funny solution you are a pato.
It can also
mean "chichipato", which in this
case would mean being someone cheap.
-Parce, por que
le pego a su hermanito? // Bro, why did you
beat your
brother's ass?
-Porque no me quiso hacer un favor a la tienda // Because I ask him to bring me something from the grocery store and he denied.
- JAJAJAJAJAJAJAJAJAJAAJA, PARCE, USTED ES MUY PATO! // HAHAHAHAHHAHAHAAH BRO, WHAT'S WRONG WITH YOU?
-Cucho, que
le dio a su novia en sanvalentin? // Dude, what gift did you get to your GF in Valentines'.
- Un BonBonBun (Look it up), // A Lolly
Pop (Kind of)
-Pana, de buenas que usted es muy pato/chichipato // Mate, no joke, you're really cheap