Although in recent years, the Irish seem to have been shamefully neglected as a good group to ridicule (except perhaps in the UK), I come from a huge (what other kind is there?) Irish family, and telling jokes at our own expense occupies a lot of our time at family gatherings, e.g.:

A VERY pregnant Irish woman awakes in the middle of the night and says to her husband, Paddy, darlin turn on the light, the babys comin

Paddy turns on the light, and they successfully deliver a little baby, get it fed, stick it in a cradle, and go back to sleep.

A bit later, the wife says,Bejesus, Paddy, turn on the light. Its twins, it is!

Paddy turns on the light; second baby delivered, fed, cradled; couple goes back to sleep.

(This happens as many times as you like)

Finally, the wife awakens, and cries, Bejesus, Paddy, another one, turn on the light!

Paddy, without turning over in bed, says: I will not. Its the light thats attracting em.