Two Arsenal fans engage in possibly the best Twitter argument of all time

Never do maths on air.

If you need to do maths then you want to be more like this guy.

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You definitely do not want to be those two gentlemen who had an argument about the age of an Arsenal summer transfer target this afternoon.

The man in question is Jackson Martinez and the question is how old he is.

All you can do is facepalm. (Click to enlarge)

The lesson is never ever do maths online.

Oh and Jackson Martinez is definitely 28. His birthday is in October.