No worries! It's always best to avoid derogatory words that could offend some people even if unintentional. However, it's always great to have a sense of humor and take things lightly, especially on an online platform where things can easily escalate. And yes, Your joke was innocent enough, you were only teasing and some people just get overly sensitive and take things too personally. Lastly I agree with you on bringing awareness towards scams/pyramid schemes/oppressive behaviour which destroyed countless lives over the years. Kudos for raising social consciousness through memes/jokes!