pitwank 

much like a titwank except using ones armpit.

'Mannn Jenny gave me the best pitwank last night!'
'Pitwank?'
'Yeah man, pitwank! Was mint!'

pitwank by HeyLook! January 19, 2009

Pinwank 

Pinwank = Shoving pinballs up your arse and firing them out at potential X Factor Christmas No.1 Artists. Pumping the nob to charge up the shot gives the Pinwank more power.

It was the live final of the X Factor and Tom was getting frustrated by a hairy old man with a women's voice going for Christmas No.1 and looking likely to get it. He was standing in the crowd and inserted a small pinball up his arse, turned round, pumped his nob a few times and fired the ultimate Pinwank shot. The ball brushed past Simons head but due to the rotatations small specks of shit went into his lego man haircut. The ball went on to hit Joe Mcsomething in his throat and end his singing career. Pinwank prevails.

Pinwank by Roger Townshend November 17, 2010

Pit Wank 

No hands?
No tits?
Use your pits!

You are the recipient of a pit wank when your girl clinches her arm close to her side and allows you to jerk off in the orifice that she has created.

Guy #1 to Guy #2 – Hahaha look at that girl over there her arms are stuck to her sides. She must have given her bloke a pit wank earlier!

Pit Wank by JPo74400 June 24, 2011