'Do you know oxygen went with potassium on a date and it was ok', he was saying it when I was confused then he again said, 'It's because the oxygen symbol is o and the potassium symbol is k and when they combine they become ok' It was so lame that I laughed because it was not humorous. He told me that joke when we were reading atoms and molecules. I remembered him teaching me to find out valance number and there goes my first question. He was right it was working his every lame joke was working. 'Here goes another joke', he was saying 'No please not more' 'This one is good' 'Okay' 'One time a photon goes to a hotel and the receptionist asked if they could help him with luggage. And do you know what photon replied' 'Yes please' 'No, he said I don't need help I am traveling light',

