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When you wank while laying sideways as to avoid suspicion that you are actually wanking.
Hey you won't believe it, i caught my flat mate sidewanking. Was really awkward when i walked in and he glanced at me in a state of complete shock!
by Bpicer March 23, 2011
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When you lie on your side and have a cheeky wank, always with your back against the door, so if people walk in you can give them an over shoulder sketchy go away look
Brett: Parmjit was having a side wank the other day
Joel: He disgusts me
by parmjitandthekids April 06, 2011
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