freak

(intransitive) To react extremely or irrationally, usually under distress or discomposure.

(transitive) To make greatly distressed and/or a discomposed appearance.

(slang, transitive, intransitive) To be placed or place someone under the influence of a psychedelic drug, (especially) to experience reality withdrawal, or hallucinations (nightmarish), to behave irrational or unconventional due to drug use.

(transitive, dated) To streak; to variegate