No, it was just something that implies that he drank constantly, except at work and for 40 days each year for Lent. At a very early age, the author learned to p

No, it was just something that implies that he drank constantly, except at work and for 40 days each year for Lent. At a very early age, the author learned to pour dad's beer in the car for his travel cup. This was a routine and ongoing practice. It is a detail that is suggestive of "If he isn't sleeping or at work, he has a beer in his hand. That's how much he drinks."