They approach and ask "Be Jesus, how on earth did ya catch that?"
To which one of the friends reply "I hang him over the bridge and he dangles his arms in and catches them as they swim up stream."
Some time later Paddy is hanging onto Murphys legs as he dangles over the bridge.
Five minutes pass, ten minutes pass, then all of a sudden, "Quick Paddy, quick Paddy, pull me, pull me up!"
"Why have you caught one, have you caught one?"
Spoiler:
