1. signifies the state of a man when he is distracted by an object of sexual attraction.
2. the word is also used to describe men in general. Testosterone tends to dull things like morals and values. The truly dick-addled male changes these depending upon the needs of his dick. The only cure for this is death by syphilis, which, coincidentally is how many dick addled men expire.
Sorry sweety, Daddy's a bit dick-addled these days, go watch some tv, or play in the trailer park.