I'm tripping balls!

This exclamatory sentence is used by someone “peaking” on a hallucinogenic experience. The statement usually comes after a long period of staring off into space or closely examining an otherwise unremarkable tapestry, or better yet, a complicated music visualization program. For some reason it appears to be psychologically necessary to human beings to alert their companions when they are, in fact, “tripping balls,” lest there be any doubt that the imbiber of a hallucinogenic compound had reached the appropriate “plateau” of the experience.

The statement is usually followed by another long period of stupefied silence.