to blink · to wink · in the twinkling of an eye

It happened in the blink of an eye.

A lady's imagination is very rapid; it jumps from admiration to love, from love to matrimony, in a moment.

I was blinking.

Davy winked at Anne, and then, leaning over the table, snatched Dora's first piece of cake, from which she had just taken one dainty little bite, out of her very fingers and, opening his mouth to the fullest extent, crammed the whole slice in.

I winked back.