Okay, so perhaps that joke went over some heads...
The link is an interesting read; and it was, in fact, free Slurpee day. However, upon musing over the amount of trash generated by the promotional stuff that many companies give out on occassion, I was left with the image of a mound of 7.11 oz plastic cups strewn about in the summer's heat.
Regarding the names: around here, 7-11s are owned by people of Middle Eastern or Indian descent, and the reference was meant to suggest that many immigrants to the U.S. try to achieve economic success without realizing that in meeting their dreams of a comfortable life, they may very well be ruining the environment that much more for those they left behind. America is, in effect, a money-making cultural void.