If I unapologetically stare at a womans tits the entire time I’m talking to her, would that really be considered rude?

Okay, just hear me out a second. I’m not talking about making faces or making suggestive comments or alternating between eye contact every few seconds, I’m talking about seeing a woman with an amazing pair of tits and specifically looking and talking only towards her tits.

If you really commit, is that really be rude or is it more of a “Its not rude if she’s into you and you’re hot” kinda deal?

Btw I’m asking because I have a vague memory of meeting a woman with an obscenely large breast size and I legitimately kept staring. (It was very embarrassing, but you have to understand that they were huge! Luckily, she thought I was cute and didn’t get pissed.)