Skunked?

I noticed that our cooler was still on the deck from the party we had three weeks ago.  I went to put it away and it was heavy, so I looked inside and there were some beers in it, no longer cold of course.  I was bummed since I learned in college that when beer gets warm it gets skunked.

Of couse I was still planning on at some point drinking the skunked beer, but it turns out, beer doesn't get skunked when it gets warm.  That's a myth.