Lyric discussion by xpankfrisst 

Cover art for H Model lyrics by Jimmy Eat World

has anyone any idea what 'h model' could be a reference to? i'm guessing some type of car or something...

@xpankfrisst The title H Model refers to the "Hypodermic-syringe Model" of mass communication. To quote Wikipedia: "The hypodermic needle model (known as the hypodermic-syringe model, transmission-belt model, or magic bullet theory) is a model of communication suggesting that an intended message is directly received and wholly accepted by the receiver."

The 1981 book Perspectives on Communication by Louis Forsdale discusses this, and the line "Forsdale's syringe is wearing so thin..." is referencing his writing on this theory.