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A withered flaccid penis possibly but not necessarily coupled with an inability to gain an erection.

Referencing the genitalia of older men, often seen within cheap cafe's ordering tea and biscuits, due to the cheap deals that OAP's search out, the shortbread will undoubtedly be without design ergo "lazily" made.
"Dude I was about to fuck her but all of a sudden I went lazy shortbread."

"It's too cold out here, I'm stocking more lazy shortbread than a Salvation Army Coffee morning"
by MightyMurloc January 07, 2012
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