gas shack Share definition Flag something grampas scream in the middle of the night unexpectedly and usually while dreaming ZZZZZZZZZZZZZZ..... "IM A GAS SHACK!!!!!!" ZZZZZZZZZZZZ...... gas shack by alaskadude April 1, 2009 0 0 Get merch Get the gas shack mug. Buy Now — $32.95 See more merch