Hopefully it was a gag shot but if it was for real even if lacking a GFI
what are odds the leakage current would flow through one of them unless
they were touching something outside the pool or there is some other path
to ground we don't know about. Otherwise it's just the flow across the
outlet from hot to neutral and ground and maybe the water becomes
(electrically) hot or maybe not. 230Vrms = 325Vpp so don't try this at
home boys and girls.