dirty ice cream 

A guy you date once, and they won't stop calling you. They are a good enough catch that you would date them again, but the fact that they are too persistent makes them less desirable like dirt on ice cream.

I had a great date last night, but then he called me 26 times since; he's just like dirty ice cream.

dirty ice cream by TaraLM January 28, 2009

Dirty Ice Cream 

Taking something good and making it undesirable, such as putting dirt on ice cream.

I went on a first date with this girl and she was pretty hot and really funny, but half-way through she asked me if I would ever consider asking her to marry me. Talk about dirty ice cream.

Dirty Ice Cream by Kunchkunch July 30, 2010

Dirty Ice Cream Machine 

The sexual act of laying underneath a man's anus, firmly grasping his erection, and pulling downwards as if preparing a soft-serve ice cream cone while he proceeds to defecate (poop) directly into the mouth of an ice cream-lover.

"You know Shelby? Yeah, I totally gave her a Dirty Ice Cream Machine last night. She really loves chocolate."

Dirty Ice Cream Machine by ConroyGullam April 23, 2010