slop on

slop something on(to) someone or something

to spill or splash a liquid onto someone or something. Don't slop the pancake batter onto yourself. Who slopped paint on the floor?
See also: on, slop
References in periodicals archive ?
He would hang the pail of slop on the handlebars of his bike.
Still, it rules out all that dangerous time in the sun; all the bother of the slip, slop, slap routine (slip on the shirt, slop on the sun cream, slap on the hat) - and besides now you can get precisely the same colour code of tan as your favourite star.
Solano, the new spokesman for the American Cancer Society Skin Protection Federation, is asking sun worshipers to slip on a shirt, slop on sunscreen (SPF 15 and higher) and slap on a hat.