Green’s Dictionary of Slang

abdabs n.

also habdabs
[? echoic of the spluttering, hesitant speech of one who is thus afflicted]
[1940s+]

1. nervous anxiety; usu. as screaming abdabs

2. empty chatter, nonsense.

In phrases

come the (old) abdabs (v.) [come the... v.]

[1940s] to hoax, to fool, to ‘tell the tale’; often as don’t come the (old) abdabs, don’t try to fool me.

screaming abdabs (n.) (also screaming habdabs) [screaming adj. (3)] [1940s+]

the horrors, utter disgust, abhorrence; usu. as that gives me the screaming abdabs.