Aziz Ansari and his Parks and Recreation co-star Chris Pratt just released this PSA encouraging young people to get their cheeks swabbed for the bone marrow registry.

DoSomething.org’s Give a Spit campaign is specifically targeting young people between the ages of 18-24. The campaign and its partners Be The Match and DKMS “need inspired young people like you to take the lead and register more committed college-age donors, especially minority donors. You can save lives by running a “Give a Spit” drive on your campus. Just sign up and we’ll get you everything you need to run a drive.”

Plus, there are prizes: The drive that gets the most donors signed up wins $2,000 for a celebratory party and everyone who enters the registry through a Give a Spit drive is eligible for a $500 college scholarship.

Readers who are curious about what donating entails should check out Taz’s recent interview with two donors. You should also check Amit Gupta Needs You for a list of drives across the country.

(Via Gawker)