Anagrammer Crossword Solver is a powerful crossword puzzle resource site. We maintain millions of regularly updated crossword solutions, clues and answers of almost every popular crossword puzzle and word game out there. We encourage you to bookmark our puzzle solver as well as the other word solvers throughout our site. Explore deeper into our site and you will find many educational tools, flash cards and plenty more resources that will make you a much better player. This page shows you that GASSER is a possible answer for Knee-slapper. You can also see that this clue and answer has appeared in these newspapers and magazines: September 4 2003 New York Times, March 7 2003 Universal, February 17 2002 New York Times and more.