Green’s Dictionary of Slang

an excl. used to indicate a sudden movement or action.

1676		T. Shadwell Virtuoso IV 74: I’ll slide down from the window [...] and, Whip Stich, your Nose in my Breech, Sir Nicholas. I’ll leave my Cloaths behind me.
1707		N. Ward Wooden World (1708) 80: He shall cast ye a Knot, whip stich, in a Twinkling, as intricate as the Gordion one.
1826		‘Nocturnal Sports’ in Universal Songster II 179/2: They‘re alvus so d—d troublesome vhen a body vants to vhipstich up a bit of a spree for a lark.