Do you weigh less at the equator than at the poles?
Do you weigh less at the equator than at the poles because of centrifugal force on the rotating Earth?
Yes, you do weigh a bit less at the equator than at the poles.
Although your mass is the same, so that you've got the same amount of fat - the same amount of "you", when you're at the equator you're spinning round so you're getting thrown away from the Earth due to the centrifugal force (the same force you've experienced if you've ever sat on a roundabout and, when it spins around, you can feel yourself being pushed away from the centre).
And, in fact, you're actually lighter than even the centrifugal force can account for, because the Earth "bulges out" at the equator, so you're further from the centre of the Earth. Since gravity acts through a body's center of mass, the further you are from the centre the weaker the gravitational acceleration you will feel, because gravity weakens over distance.
So even if the Earth wasn't spinning, you're actually lighter at the equator than you'd be at the poles.