Very unexpected; wildly surprising.
Out of control.
Of unsound mind; insane; demented.
In love; experiencing romantic feelings.
Very excited or enthusiastic.
An insane or eccentric person; a crackpot.
Eccentric behaviour; lunacy; craziness.
Very, extremely.
Of a shocking or surprising nature.
So expensive that (figuratively) it would make one's eyes water.
Having an odour, vapours or smoke which causes irritation to the eyes.
Having an extremely bad odour.