baby arm
That's a pretty inside joke, there.
The radio host asking the question, Dan McDowell, is also a huge idiot. Thinks he's funny but is as lame as it gets. And he, like Corso, also can't take a joke or anything that might be perceived as an affront to his self-esteem. The giant clicking sound heard around the Dallas-Fort Worth area when McDowell comes on the air around noon CST are all the station's normal listeners turning off their radios. Why the station continues to employ him is beyond me.
Anyway, it sounds like this was just a DFW version of the famous South Park "cripple-fight".