Same, I've been a regular biker and swimmer most of my life so I have big quads. Only time the in-seam of my pants have ripped is when I'm working (actually working, like manual labor, not fucking sitting in a chair and the sheer pressure of my thighs ripping the pants open like that fatty) or if they're more than 3 or 4 years old and I stretch in an odd way, like getting out of my brother's lifted truck one day.