Top Definition
`verb; meaning to get so obsessively jealous in a relationship, one would go to extraordinary methods to hurt a potential competitor.

Used on some late night TV after the February 2007 incident where a lovesick astronaut, Lisa Nowak, drove 900 miles in diapers to confront and threaten a rival for the affections of her boy friend

Not as fatal as going postal, in most cases...
Actually it seems everybody on the OC is ready to go astronaut at the same time.

My first wife went astronaut on my girlfriend when she found out I took her to Branson for her birthday. Fortunately the cops were there
by digitalflack March 09, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt