I used to sing along to it rather mindlessly, thinking at least it sounded pretty cool and made her sound pretty tough (also yeah, I got the boxing allusion described above, though you didn't say you didn't get it, too).

Eventually (the last couple of years) I realized the song outlines what sounds like a borderline-abusive relationship, hopefully one which she's leaving.

Hit me with affection...I would've spit my drink out if I wasn't between sips, never thought of that. The syllable count and vowel/consonant stresses work, though (kind of sung it to myself in my head).