euphemism for the act of drunken vomiting, particularly when done in the garden or outside of an establishment where a social event is taking place. The phrase derives from the violent, often growling sounds, comparable to that of a woodland creature engaged in a fight that violent, alcohol-induced vomiting produce. The phrase can also be used to deny vomiting in which the person responsible may claim to have literally been wrestling badgers.
He downed a bottle of rum and spent the rest of the evening badger-wrestling in the azaleas...
"I was simply dealing with pest control and can totally handle my drink"