Wet pants and shit pants - pants, shorts and underwear are stained by urine and excrement. Dirty smudge and spots on the clothes Stock Vector | Adobe Stock
Dirty underwear and pants with brown stain of feces, stool and excrement after defecation. Health problem of diarrhea. Vector illustration on plain background. Stock Vector | Adobe Stock
Love Island viewers shocked as they spot unfortunate stain on Jacques' underwear - Mirror Online
embarrassing stains on underwear (info in comments) : r/CleaningTips
Pre-Stained Underwear: Easy Tiger Corp. Saves You the Embarrassment of Real Poop Marks