What does 2yyur2yyubicur2yy4me stand for?

The phrase "2yyur2yyubicur2yy4me" is a slang abbreviation that stands for "Too young, you're too young, you're too young for me".

It's a way of expressing that someone is too young for a romantic relationship.

Keep in mind that this slang is not commonly used and might be considered outdated or even offensive in some contexts.