Today hundreds of men are throwing off their clothes and jumping into the sea at Skerries South Beach in County Dublin.
Wearing just a dickie-bow..... the 'Dickie Dippers' ....hope to raise a quarter of a million euro for Mater Foundation Cancer Research.
It's the THIRD time they've run what is now believed to be the biggest all-male nude swim in Ireland.
Organiser Dermot Higgins along with famous faces such as Dublin comedian Shane Dan Byrne will be bearing all and taking the plunge according to the Irish Times.
More information including how to donate can be found here.
