I was referring to the fact that you were getting so literal that you were beginning to quote dictionary definitions. As a native English speaker, I find that dictionaries are all very well but they don't allow for nuances in everyday speech. In many ways, a dictionary is out of date by the time it goes to print - or appears on the net.
When I said 'lighten up' I was suggesting that you were too literal and serious for what was an aside rather than the main subject of the post which was (if I remember rightly) 'Which 'drink' is your favourite?'
So, yes, lighten up - just tell us your fav drink without getting hung up on the phraseology of the question. That's the point I was TRYING to make. Cor blimey!