in your birthday suit

ADJECTIVE
21 LETTERS · STARTS WITH I

in your birthday suit is a valid 21-letter word worth 30 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1N1Y4O1U1R1B3I1R1T1H4D2A1Y4S1U1I1T1
1 + 1 + 0 + 4 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 4 + 2 + 1 + 4 + 0 + 1 + 1 + 1 + 1 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does in your birthday suit mean?