The suspect excuse that a mate gives you for not going somewhere, or doing something. Named because the real reason for him not going somewhere or doing something is that he is a wimp, and therefore has no penis.
Person 1: 'Have you herd why Alex isn't coming today?'
Person 2: 'No, do tell'
Person 1: 'He's ill, and last night he was "throwing up all through the night"'
Person 2: ' A cockless excuse if i ever herd one'
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.