Two chemical engineers walked into a laboratory, the third one used the door. That's right; it's that time of year to send us your most cringe-worthy scientific 'Dad Jokes'. Make sure you take this chance to be a science dad or mum who is so cool that you're absolute zero - even your kids will think you're OK! Past winners have advised that while your children may protest after hearing the same joke four times in a row, all you have to do is explain that all the best chemical jokes argon.
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