Green’s Dictionary of Slang

slither v.

also do a slither
[SE slither, a rush, a hurry; later use is Aus.]

to hurry away.

[UK]Leaves from Diary of Celebrated Burglar 44/2: She was getting tired of him living upon her and using her money as if it was his own, so she was glad to let him ‘slither’.
[Aus]Bulletin (Sydney) 29 Aug. 22/2: [A] boy at the window, over from the fruit shop, with a memo. demanding ‘immejat payment, as you’s going to do a slither.’.
[Aus]Bulletin (Sydney) 19 Sept. 14/2: Then disgusted, at length, cried Joanna: / ‘I will slither straight back to Aunt Hannah;’ / So she flies, in a funk, / With a half-corded trunk, / Leaving ‘fairwel’ scratched on the pi-anner.
[Aus]Stephens & O’Brien Materials for a Dict. of Aus. Sl. [unpub. ms.] 143: SLITHER: to clear out or escape.
[UK]W.S. Walker In the Blood 244: They might ’a’ slithered with your goods if you ’adn’t been so mighty sharp with your hands [F&H].
[Aus]Baker Popular Dict. Aus. Sl.
[Aus]N. Pulliam I Travelled a Lonely Land (1957) 239/1: slither (sling) – get going.