Another word for wanking. It involves pulling the foreskin over and back and therefore yo-yo-ing is appropiate. Unless your circumsised.
'God! Adams loves to Yo-yo'
'Mum, i'm going to do sum yo-yo-ing'
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug