Skinny Fat...

This is what the Urban Dictionary says about Skinny Fat:To look slim, even with revealing clothes, but when touched, the touching hand sinks into fat before reaching muscle. Older people will 'show' "Skinny fat" visually, but young people have firm skin that hides it until they're touched. "She looks fine, but her skinny fat ass feels like mashed potatoes." --> yes, Urban Dictionary said