What if you are SO certain that you are going to make lemonade but you are NOT given lemons? Are we destined to make lemonade IF we are given lemons? Yes? No? Are we contented with lemons?
What if some of us want more than lemons, say apples or oranges? Life gives you lemons, but you want orange juice? Throw them in the face of the person who gave you the lemons until they give you the oranges you originally asked for?
What if you really really want to make lemonade, you grow a lemon tree but it produces apple instead? To be simple minded maybe when life gives you lemons,
Well, by the time you are done thinking of what to do with the lemons, the lemons would have been very bitter and even fermented. Maybe another lesson that we can learn from this phrase is to not take too much of time to hesitate? In a consistent comparison to "procrastinator is the thief of time", this phrase also implies that one's procrastination/hesitation might just cost a life-altering decision, and TIME as well.
However, we are all human beings and what differentiates us most from animals is the fact that humans have feelings/emotions, which can lead to a positive or negative outcome, and it entirely lies in our own hands to make a decision. This phrase very much reflects a feeling of dilemma because we'll be doing a lot of thinking, more thinking and even more thinking : "hhmm.. what to do with this lemon ah?"
While some people never regret their decisions, some would just stop for a moment while squeezing the lemon and think : "Hey, what if the lemons are too sour?" or "Where to get sugar?" or "Hey buddy, mind selling me your cup of lemonade?". I mean, what is the point of pondering/thinking too much when you know how unpredictable and random life is? Have some courage, make a decision, and never look back because you have already chosen.
As much optimism as this phrase can reflect, there are always still a lot of factors of consideration that determines the outcome of the lemons given to you. So will you do something about about the given lemons or are you going to ponder about it and regret if the lemons turn bitter due to the amount of time you took to think? You decide.
As for him, he has already chosen NOT to make lemonade. Instead, he conned everyone by using lime and buried the lemons deep down the ground. He has the courage to choose and he is living with no regrets. *salutes*