'Parks and Recreation's' Chris Pratt and Aziz Ansari give a 'spit' about cancer

Oh, so very clever. "Parks and Recreation" stars Bright Abbott Chris Pratt and Aziz Ansari have teamed up with Do Something to encourage everyone to help boost awareness and donor registry for blood cancer patients.

If only Pratt had forsaken vanity and just worn his glasses for the PSA shoot.

The hilarious ad urges fans (and non-fans, we suppose) to arrange donor registry drives in their colleges to help patients with acute leukemia recover. In fact, if you arrange a super-awesome Give a Spit about Cancer drive, you could possibly win a fantastic $2000 party.

It may not be a Tom Haverford party... but there will be free food.

Read more at DoSomething.org/Spit.