Bloody Mary, the cocktail. Popularized by Adam Sandler and David Spade's sketch "Dude", in which a group of surfers, stoners, and ganstas get drunk and crash a train.
Texas hold'em poker hole cards: King of spades and 9 of spades. Pun for "spayed K-9" from the traditional Price Is Right show ending reminder to spay or neuter your pet.