You're being overspecific in your mind about the physicallity of my use of "pounce".

I meant "pounce" in the sense of initiating the sequence of actions of an attack (say, get up, run and pull somebody's purse) not in the sense as a the physicallity of a tiger pounce.

That said, this mismatch of impressions nicelly illustrates how you can't to assume that the person on the other side thinks the same as you: you really can't presume that somebody else feeling a bit scared and paranoid by your footsteps that sound like somebody following her has taken the time to ponder on what the best moves for a thief are, and reached the same conclusion as you that stopping, tying your shoelaces and looking around isn't at all what a thief would do to simulate not being a thief.