I just got a spam with the subject header "carp ganges hong chuck inversion".  I thought to myself "I know what those words mean, but it still doesn't make sense" ("hong" was the least explainable, but I thought, "hey, it's the first part of 'Hong Kong', so yeah, I know what it means"). 

The subject header reminded me of when Lisa Simpson was watching a slide show put on by the official from the State Department, and a theatre with the the words "Yahoo Serious Festival" appearing on the marquee, advertizing a film festival featuring the actor Yahoo Serious.  Lisa then says, mostly to herself, "I know those words, but that sign makes no sense."