Coffee from People Who Hate You

As a grad student, I have a minor coffee habit. There are about 8 area coffee stands I frequent, I have customer loyalty cards (buy 10, get one free) from 4 of them. One thing they all share is the paper cup/plastic lid coffee disbursement system that features the built in dribble effect. You probably know what I mean. The system works fin unless you align the hole in the lid that you drink from with the seam of the paper cup (or it is within +/- pi/4 rad. of the hole). If you have it so unfortunately aligned, coffee invariably dribbles down your shirt/pants/naked chest (don't ask) as you sip. Often, the cups are handed to you with the lids already in place leading careless people (me) to begin drinking before checking their alignment.

I have developed a theory about why cups are handed to you in dribble mode. It's a simple theory that, I think, accounts for at least 98% of unfortunately aligned drinking apparatti.
1.) The person handing you your coffee has just started and doesn't know about the evils of hole on seam alignment.
2.) The person handing you your coffee hates you, deeply and personally.

My theory is supported by loads on undocumented anecdotal evidence. That may not sound impressive, but several people I've heard of used the same standard to decide not to have their children vaccinated because they'll catch the autism.