up to our necks

ADJECTIVE
15 LETTERS · STARTS WITH U

up to our necks is a valid 15-letter word worth 20 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
U1P3T1O1O1U1R1N1E1C3K5S1
1 + 3 + 0 + 1 + 1 + 0 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 5 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does up to our necks mean?