Lags is the mixed word of "fat" and "legs" therefore "fat legs"
1. "Oh my God! That lady over there is so obese! Look at those lags covered in cellulite and dimples!"
2. "My lags hurt from walking to school, I'm going to get a ride home."
3. "Get the hell off my bus, fatass! You need to walk the fatness off your LAGS!" -Bus driver Tom