Leg-rub
The chaffing effect of sweaty thighs on a summers day and/or during exercise. Not neccessarily caused by obesity, can afflict naturally fat-thighed people.
'Oh its so hot walking, and to make things worse i'm getting serious leg-rub here'
'Even though i'm athletic, i still get baaaad leg-rub when i go running'
'Even though i'm athletic, i still get baaaad leg-rub when i go running'