Someone who responds defensively to a general statement, meaning they clearly took it personal
Girls that call the Leykis show tend to be hit dogs because they're always poppin' that "not all women are like that!" sh*t when Tom never said "ALL women."
Old defensive a*s hit dog, I wasn't even talkin' about you in particular, wipe ya mouth!
The right wingers were being hit dogs for Sarah Palin when Obama said "lipstick on a pig."