slobber-knocker
n.— «Many teams have pet names for the game’s big hit—often the one that clears the way for a touchdown or prevents one. At Denison, such a hit is a “slobber knocker,” the Yellow Jackets’ most prestigious honor.» —“Filmed replays and colorful awards help coaches chart their players’ progress” by Debbie Fetterman Dallas Morning News (Texas) Oct. 17, 1990. (source: Double-Tongued Dictionary)