only wearing pink “ironically” or because “chicks dig it.”
As a straight guy who has several pink shirts and is, in fact, wearing one right now (I guess salmon is more acurate but still) you just gotta have it broken up because it's such a loud color, and in a style that works with it and you.
Example: the one I'm wearing now is a pink & gray plaid pearl-snap western shirt. The only comments anyone has ever made about it have been that it looks good on me, same thing with the purple shirts I've got.
Fishing shirts are another style that look good in vibrant colors and I've got a pink polo with gray stripes as well.
OTOH: a pink shirt with a very feminine cut (even if unintentional) or improperly sized isn't going to look good and will get a different response.