I am so impulsive. My last name starts with a "W". A recent study has concluded that people at the end of the alphabet are more impulsive buyers than those at the front. 

Researchers say and published in the Journal of Consumer Research:

The idea holds that children develop time-dependent responses based on the treatment they receive. In an effort to account for these inequities, children late in the alphabet will move quickly when last name isn't a factor; they will 'buy early.' Likewise, those with last names early in the alphabet will be so accustomed to being first that that individual opportunities to make a purchase won't matter very much; they will "buy late."

I always hated going last.