Swimming with the Fish

Silly little people sitting happy on the edge,
With no one being careful - one's bound to fall off the ledge.
I'll hedge my bets and say the first to fall is red-hat Jim,
And that could be a tragedy 'cause Jim can't even swim.

So he sat there with that dumb grin 'til he slipped and fell right in,
To his surprise & quick demise that's when he found out something grim...
Those so-called friends were quick to laugh but slow to rescue him,
Jim's last thought was "With friends like that, one needs gills and maybe fins."