At our annual awards event last Saturday, one of the boats that won a number of awards, including most improved was called Dilligaff.
It sounded Welsh but I wondered about its origin. It was explained to me that it's an acronym: D.I.L.L.I.G.A.F.F. which stands for "Do I look like I give a flying f...."
The boat has kept its name though several owners. The previous owner was totally oblivious until his teenage daughter explained it to him.