you must be tired, because you've been running through my mind all day

you must be tired, because you've been running through my mind all day

A corny pick-up line used to convey one's (typically a male's) romantic interest in someone else. A pun on the word "running." (If something is running through one's mind, they are thinking about it, while the physical act of running would cause tiredness.) A: "Baby, you must be tired, because you've been running through my mind all day!" B: "Oh boy. Yeah, I'm not interested."
See also: all, because, been, mind, must, running, through
Farlex Dictionary of Idioms.
See also:
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  • (someone or something) rides again
  • rides again
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  • (not) give a toss
  • (not) give a fig
  • (not) care a fig
  • (not) care a toss
  • make like someone/something
  • (not) care a hoot