IDK I Was Bored

Laughing At The Dinner Table 2

So my family had finnished dinner and was having desert when my mum asked "Daniel, (my eleven year old brother) if you were born five years ago how old would you be?". I immediately responded with "five" however after thinking for three seconds my brother responds with; "six because I'm eleven". Everyone burst into laughter and I was sitting there like how could he get six? So my mum repeated the question and again he responds with "six". I look at my brother in pure bewilderment as he simply says "what?". So my mum repeats the question five more times getting the same answer every time to the point where I say "I can't sit next to you anymore". Then my mum repeats the question again, and the answer my brother gives us made me want to slap him, he said, "six because eleven minus five is six" and that is when I lost it. After everyone laughing for ten minutes after he said that and us repeating the question slowly he finally gets it. I can't believe that just happened.