IS is IS. "Is meaning equal" is tautology. Is is simply is.

A euphemism for “kill me” now that composting oneself after one’s death has become popular.

Conjunction of I and was for I was.

A word that, despite being among the most common in the language, not everyone is sure of the meaning of.

In slang, "is" is used to replace "are"

3rd person singular of "to be"

A perfectly acceptable beginning to a Facebook status update, no matter how grammatically incorrect. Most notably when a person has bad taste in music and uses song lyrics for status updates.