I inadvertently caused WW3.

For context I've had a rough past few years and as a result I'm living in my little brothers garage. It's my fault entirely as to why I'm there but that's for another day. Before things went sideways this afternoon my brother had shown me a screenshot of something my nephew had sent him. It was a flyer for a frat party for st.pattys day. He was sent this via snapchat and was asking me what a certain line meant. The line in question said text the number shown for the addy. He didn't know what addy meant. I've been around the block many a time so my mind went straight to addy means adderall. College + fraternities+ addy= text that number to buy adderall. I've heard of people buying drugs off that app but I myself doesn't know how that works. I'm oldschool I buy the old way in person. He begins to freakout and started interrogating my nephew. My brothers wife who has never been a fan of mine gets involved which makes it worse. Eventually it was made clear that addy means address. My brother is relieved, I'm still not fully convinced it means address and his wife just starts in on me. "How dare you accuse my son of doing drugs" blah blah blah. I said I never said he was doing drugs and I apologize for being old with outdated slang. The argument went from there to how she doesn't want me staying in the garage anymore because she bets I'm robbing them while they are working. I'm not a thief and I don't see the need to steal. If I need something I simply ask I never was the type to steal or scam. Needless to say there was no reasoning with her and I was tired of trying it was best for me to walk away. I've been gone for hours just wandering. I figure I'll go back tomorrow when things have cooled down for my things. I thank my brother for his kindness but I just can't stay there while I'm trying to put my life back together.