No, WBU is not a bad word at all. It’s just used to check whether someone is good in health or not. This could be asked by anyone else not just in the casual chat conversation by the youngsters only. The term WBU means “What About You” most of the time because every user generally asks someone about their feel or health. Well, every abbreviation is not wrong or contains any suspicious word that is not good to use by everyone even kids.
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