A bunch of pot heads that chill on the bleachers at their high school or a local high school all day and smoke cigarettes and weed.
P-sped you fucking bleacher creature, go home!
Term for the drug sub-culture in some Long Island High Schools in the 1970s and 1980s. Derived from the act of smoking pot and hanging out under the bleachers before school began.
"Here comes a bleacher creatures. Do they ever go to class straight?"