Beavis and Butthead lab
n.— «“There was a level of sophistication here,” he said. “It’s not just a Beavis and Butthead lab.”» —“Police discover a 2-pound batch of speed “cooking” while no one was home” by David Hermann in Palm Springs Press-Enterprise (Riverside, California) Jan. 17, 2004. (source: Double-Tongued Dictionary)
Further reading
When she was a child, Chris from Santa Rosa, California, misunderstood the definition of the word vehicle—with amusing results. This is part of a complete episode.
Related
Carl in Newport Beach, California, wonders why the prefix be- functions so differently in the words behead and befriend. Also, why do the words decapitated and beheaded have different prefixes? And what the be-doing there in bemoan and belabor? Like...