I'm from Ireland (Dublin), grew up in the 80's (born 1979).
We used to sing this in a circle clap game to choose who could choose the next group game (e.g. Red rover, kick the can, grass houses, what's the time mr. Wolf etc) or pass the time at break time at school.

Down by the river of hanky panky,
Two fat frogs sit back-to-back,
ooooo-ahhhh-ooooo-AAH!
Down by the river was
Ooo-peee-PLODGE! ('ooo' and 'peeee' mantras permitted claps to the next and the next person as long as the chant held: oooooo *clap* oooooo *clap* *peeeeeee* *clap!* PLODGE!! (person 'plodged' was 'It')

Good times :)
-Catríona S.