means 'i don't know' but is said in a childish voice

A special snowflake

I swear . like you would say on ur mama or on god..

Used on the train (usually subway, metro, etc.) - when the train starts to pull off at your destination station, this is probably what you say to someone you're talking to to tell it "this is where I get off."

A honest promise

You, but better.

Hi Ames hahahaha