chocolate martini Share definition Flag The act of pouring a beverage (preferably Mountain Dew) into someone's rectum and sucking it out with a crazy straw. When Greg ordered a chocolate martini down at Peterland, he didn't quite get what he expected. chocolate martini by Mark December 19, 2004 0 0 Get merch Get the chocolate martini mug. Buy Now — $32.95 See more merch