PLONK

(PUT), US usually plunk [verb] [usually + adverb or preposition] [informal] - to put (something) down heavily and without taking careJust plonk the shopping (down) on the table, and come and have a cup of tea. [T]We spent all evening plonked (= seated without moving) on the sofa in front of the telly. [T]Come in and plonk yourselves (down) (= sit down) anywhere you like. [T]"I'm exhausted," she said, plonking down (= sitting down heavily) in a chair. [I]