"Istle" is a word in ENGLISH

Two Irishmen were walking down the street with two salmon each under their arms. Two other Irishmen walking in the opposite direction see the two lucky fishermen and ask " how did you catch those ?" Well its like this! Michael here holds my legs over the bridge, and I grab the salmon as they swim up the river. We got four salmon A great days fishing! So the fishless pair look at each other and agree to give it a try. They get to the bridge and Sean calls to his friend "hold my legs now Paddy". Well he is hanging there upside down for thirty minutes when he suddenly cries.. "pull me up, pull me up!!" Paddy asks " do you have a fish Sean?"............ No replies Sean, "there's a bloody train coming!!!!!!!!"