You should replace your bike shorts
BEFORE you can read the cover of a book through the spand--AHEM, I mean LYCRA, BECAUSE I'M A CYCLIST AND I KNOW WHAT TO CALL MY SHORTS :) (Thanks, bro)..
and BEFORE you can stick all 5 fingers through different holes.
The spaLYCRA! is starting to die in a lot of my shorts and cycling accessories. I can see little white elastic hairs peeking through and the elasticity is just not what it once was. On one hand, I feel proud for wearing these pieces of clothing so much that I actually wore through them. On the other hand, MAN I need to get some new spLYCRA!! Ha ha!