Why do I never believe a guy brag/complain about being too big? Probably because the odds are 1 in 100,000. Of course if you don't make them wet first, anything is too much.
The porno industry was made by John Holmes, odds of you being bigger than that are 1 in 10,000,000 or less. No woman ever refused to ever work with him again either because he was gentle and considerate in bed.
Anyways, fat girls usually are tighter because of all the fat packed in the area.