A Chilean slang term used to encourage someone to do something, similar to 'go for it' or 'do it' in English. 'Gallo' is a colloquial term for 'guy' or 'dude'.
Examples
- Spanish: No tengas miedo de preguntarle a esa chica, ¡pícalo, gallo!
- English: Don't be afraid to ask that girl out, go for it, dude!