When somebody doesn't want to sleep with someone so badly that they wear their jeans to bed - despite knowing the discomfort that this will cause them. The ultimate last ditch fend off and a highly disrespectful action. One can experience large amounts of distress after a 'jeansing'.
'Did the girl from the bar stay at yours mate?'

'She did but I got dealt a jeansing. Can you believe it!? I'm devastated.'
by Razboy January 19, 2017
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The act of dry sex while wearing denim pants.- Verb
I threw on my Armani Denim cause I knew she was so down to jean.

Erica and I were Jeansing untill 5 in the morning
by Kostelnik DiGiovine February 6, 2009
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