Noun. or Adjective.

A person Designated to stay sober and supervise people under the influence of Hallucinagenic Mushrooms. A Shroom Daddy is usually a close freind, or fellow drug user. People may take turns over the course of a week being the Shroom Daddy, in order to get their share of psychadellic fun.
EXAMPLES:

" I was tripping so Hard on shrooms the other day, If I didn't have my Shroom Daddy with me I woulda taken a dump on my parents bed."
by Fuzzyblaa100 February 19, 2010
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