Sentence:  The idea was to win her heart by getting really close and really pointedly ignoring her, only this time - and here was the genius of it - at McDonalds. I ordered a <WSD>thickshake</WSD> and some fries and as I walked nonchalantly past her table, my attention fixed on a Hamburgler poster in the middle distance, a tiny rift opened in the space-time continuum. 
Meaning of the word marked with <WSD> tags:  An imitation milkshake (in locales where "milkshake" refers to the drink specified above), often containing no milk.