Jogging bottoms means: Jogging bottoms is the standard British English term for what Americans call sweatpants - those loose, elasticated-waist trousers designed for exercise but mostly worn for comfort on the sofa. In. There is no real cause for parental concern; it is descriptive vocabulary rather than risky behaviour. If your teen uses it, context will usually make the intent clear. A short, curious question about where they heard it is usually all that is needed to know whether to follow up.