Arnie's meatballs are an Earth culinary delicacy of ill-repute.
According to Norman, an oracle of humorously grave disposition, he reproached these "meatballs" as obstructing the digestive tracts of humans: in front of two Cylons, no less (The Night the Cylons Landed, Part I).
These meatballs are the labor of love of a human named Arnie, taking an hour and a half to prepare properly (The Night the Cylons Landed, Part II). They are then typically shoved down the throats of unsuspecting victims during festivities, such as Halloween.
Coupled with the "romantic malnutrition" of Mildred, those between these two dangers will have the "night of their life".
The personification of these meatballs is a human baseball player named Vida Blue, who exerts a similar influence during his time with the San Francisco Giants baseball team in the 1980s (The Night the Cylons Landed, Part I).