kerflop

He fired a wet bailing sponge at me and I dodged it and it hit one of his own patrol—kerflop!

I thought he was a goner there, yesterday, when I saw the Seagull go kerflop.

The first I knew about it he came out of the hopper kerflop.

He pulled it off, but it war too much for him, and it come down kerflop on his foot.

The sudden shock sent him tumbling backward, and he fell kerflop!