the word gawney is a very mild euphemism for jesus or jaysus or even janey as in janey mac
It was Used mainly by dublin children growing up in the late 60's early 70's
the use of the word gawney denotes exclaimation of amazement ,incredulous surprise or awe
Person 1: Did you know when dogs have sex they get stuck together and someone has to throw water over them to unstick them ?
Person 2 GAWNEY!