Fuck a jackalope day is an international holiday celebrated on the 18th of December. Celebrators typically pound the plump ass of the nearest jackalope then treat them for aftercare cuddles.
To dispose of goods, people or animals. Disposal does not need to be in a body of water.
Common usage in the mixed race culture in London, especially mixed black/irish.
Dean: I am a bad man
Harry: You're as bad as a cucumber
Dean: I'd fuck a dog in a river.
Harry: ........ wait.... you'd fuck a dog in a river?.....