Sure, every state has a number of similarly named burger joints, but this gem up in Oregon has a 5Lb Challenge (now THATS a GIANT burger!) -as featured on Food Network.

"Giant Burger, Springfield Oregon - 5Lb Challenge; Eat Me If You Can!" Men's Souvenir T-Shirt

TAG SIZE: XL (see following dimensions for TRUE FIT)
CHEST MEASUREMENT (armpit-to-armpit measurement across front -then doubled): 48 in / 122 cm
NECKLINE TO HEMLINE MEASUREMENT (length down back): 30 in / 76 cm

NUMBER OF SIDES WITH GRAPHICS: 1, single-sided; blank back
COLOR: Red
MATERIAL: 100% cotton, preshrunk
BRAND: Port and Company

CONDITION: VG, pre-owned and well maintained, graphic has some cracking; no stains or rips/ garment is thick & soft  -being sold by original owner who bought new circa 2009-2011 and didn't wear too often after the first few years