donkey-lick
(also donkey-wallop)
verb [with object] Australian /NZ informal
Defeat (someone) resoundingly: she donkey-licked her opposition in the 1200m sprint...
- She's a fabulous horse to train, and she absolutely donkey-licked them!
- England put in a really great performance and donkey-licked us
- He donkey-licked his rivals at Rosehill on Saturday.
Origin
Late 19th century: from donkey + lick in the sense 'beat decisively'.