Pretty much what it says - 7-11 is offering free slurpees to celebrate it's 85th birthday today from 11 am to 7 pm. For a change this doesn't look just local/Ann Arbor, but probably national, so all readers can partake. But college kids in particular like free stuff, and it's not as hot, but still hot. And really, everyone likes free stuff.
You can find a store that's offering it on their own website-