Brian Propp Autographed Philadelphia Flyers Hockey 50th Anniversary Logo Puck Inscribed "Guffaw" Official NHL logo puck with signature from Flyers legend Brian Propp - authenticated by Dynasty Sports Brian Propp was known for his unique goal celebration dubbed "The Guffaw". After scoring a goal, Propp would skate towards center ice, place his right glove under his left arm and raise his right arm in a waving fashion. While making the gesture, Propp would say, "Guffaw!". Propp credits the celebration to comedian Howie Mandel. During an Atlantic City show, Mandell suggested it would be great if, instead of cheering and clapping, everyone just waved their arms and said, "Guffaw!" Propp adopted "The Guffaw" and it became his signature move first appearing the 1986-87 season. All autographed memorabilia is accompanied by a certificate of authenticity and a matching hologram. Hand-Signed by Philadelphia Flyers great Brian Propp Signature is in sharp gold on the puck Includes 'Guffaw' inscription Authenticated with Dynasty Sports serially numbered hologram and certificate during public autograph signing - guaranteed to pass JSA or PSA/DNA authentication Official NHL puck