You’ll Have to Pay in Blood. The Red Cross teamed up with “Peanuts” for an April blood drive, and a T-shirt promoting the campaign has become an unexpectedly hot commodity online.

Everyone who donates blood by April 23 will receive a T-shirt while supplies last, featuring Snoopy as his alter ego, Joe Cool, in front of the Red Cross logo with the caption “Be cool.

Metallica will provide an exclusive T-shirt to people who donate blood or “power red” at an American Red Cross blood drive at the Crystal City Doubletree today beginning at noon. Supplies are limited.