Welshman's Wipe
Wiping your arse with your hand, when you run out of bog roll.
" I will not shake your hand, you 'av done ze Welshman's Wipe!" - The real reason Arsene Wenger refused to shake Mark Hughes' hand after the Man City v Arsenal Carling Cup game of 2009
welshman wipe
Wanking off your partner and wiping it on their face
I did the Welshman wipe on Asian Ben's Chippolata and wiped his sausage juice on his face