The super-superlative of 're' in Argentina and Peru — when 're' alone isn't enough to express how extreme something is. It's the verbal equivalent of adding three exclamation marks.

A bus or public transit vehicle in Argentina and Uruguay. From Buenos Aires lunfardo, it's the most street-level, everyday way to refer to the public transportation you take daily to get to work or school.

To have an amazing time, an experience so great you describe it as an explosion of fun and happiness. When you 'la pasas bomba,' every moment was perfect and the memory alone makes you smile.

An exclamation of surprise in Argentina and Uruguay, especially when something unexpected happens suddenly. Also said when picking up a small child, that affectionate upa every mom does.