When it's wider around than it is long. As this prevents actual penetration from happening it forces the owner to pound around in the general vicinity of his target, hence the name mallet dick.
Lady: Damn he hit me with his mallet dick last night, I'm sore from my knees to my belly button
When one parks their vehicle outside the lines of a parking space either to pompously protect it from getting scratched or just out of sheer ignorance and carelessness.
"Look at this motherfucker "Dick Dockin'" his 1990 Fiero at the empty end of Walmart...
Go got no one in your DM’s.
You got no one in your pussy.
You got no one on your pussy/dick.
Simply, no one likes you.
You: Bro, Alex hasn’t texted me and Sam cancelled on our dick/pussy appointment.
Me: Your dick dry.
When you have plenty of an item and someone asks for a few and you tell them no.
Ben needed some pvc 90’s and we had a whole box. He asked for some and we told him no. We blank dicked him.
One who is a total dick about a bad situation; Debbie Downer
1) Tim-Tim, why do you have to be such a Debbie Dick???
2) Tim-Tim: We are never going to win!!!
Andrew: Don't be a Debbie Dick, Tim-Tim.