A-Pair-Of-Damp-Pyjama-Bottoms

1)An item of clothing often associated with a person is commonly either wets the bed or has wet dreams.

2)An insult for someone who is boring or may have spunked themselves in public recently.

Man 1: Haha, did you hear about that guy who has wet dreams every night?
Man 2: Jees! What A-Pair-Of-Damp-Pyjama-Bottoms