An unwanted erection obtained during a massage.

the rubbing and chaffing of chubby thighs against one another during long walks or duration of activity.

When your thighs love each other very much and touch each other when you walk. Also known as 'chaffing'

Rub my chub, asking someone to wank you off or either just to rub your chubby belly

When the skin between a fat chicks thighs rubs together while walking causing an mild irritation between their legs.

Another stupid label made up to put larger women down.
Implying if their thighs touch when they walk or stand, it's a Chub-Rub

what fat girls experience when their inner-upper thighs rub together so much they get chaffed and rashes break out. It usually is accompanied by sweat and foul odors. chafejock-itch