1) Drop 2) Fall heavily 3) Flump down 4) Plop down 
A flump also know as by the latin benjamus frenchmanus is the true love of cheryl magee. Flumps are gentle creatures which spend most of their time sleeping and grazing. They are fluent in english aswell as flumpanese and some species are know to be able speak japanese. Flumps are around six feet tall with thick, brown curly fur and can often be f...[sweet] A Flump is a British sweet made of marshmallow. The sweet is a combination of both pink and yellow marshmallow, which has the appearance of a twisted helix. Flump sweets are sold in the United Kingdom and are made by the confectioner Barratt. It consists of glucose-fructose syrup, sugar, gelatin, cornflour, natural flavouring, and n...
[v] - fall heavily
plonk verb set (something or oneself) down with or as if with a noise; `He planked the money on the table`; `He planked himself into the sofa`flump down verb fall heavily
to plump down suddenly or heavily; flop.