Exactly! No one who is polite will ever say anything over 250lbs. For some reason, even if the motherfucker really is 400lbs, society frowns upon actually accurately guessing their weight - and people dare not say anything that society might deem not PC.  Besides, asking people to guess your weight is a really rude and loaded question, because of the aforementioned fact. No one is going to be honest, so you're basically asking people to lie to you - which makes you a narcissistic dick.