Tina’s undoubted boy-craziness is a plot element in many episodes, often getting her into zany situations chasing unrequited or even oblivious crushes. The issue is addressed directly in Just One of the Boyz 4 Now for Now, wherein at first Tina denies being boy-crazy, she eventually accepts it as nothing to be ashamed of.
Tina is a very well intention, but socially awkward. When voting who would serve a customer they thought was a child molester in “Human Flesh,” Bob says they comfortable let Tina serve him because she is bad with customers. Louise says that it isn’t her fault because she’s autistic, but Bob quickly says Tina isn’t autistic. She displays poor social skills like prolonged groaning when under pressure, hiding under tables, naivety, muted emotional expression, speaking in a monotone, believing everything she hears, having a very small range of interests and topics and taking things too literally.
Also, Tina doesn’t express emotions very clearly. Even when times are rough and she’s under tremendous amounts of (often self-induced) pressure, her voice is always flat and without inflection. Even her groans sound disinterested.
See more at: Those butts drive me nuts Tina Belcher poster
