Ascending or having the ability to ascend in social rank, esteem, or class. I was worried that Janet's wealthy parents would think I wasn't upwardly mobile enough to go out with their daughter. It wasn't until I received my uncle's large inheritance that I became in any way upwardly mobile.

Descending or likely to descend in social rank, esteem, or class. The opposite, "upwardly mobile," is much more common. If we lose all our savings, we'll become downwardly mobile.

Any particularly uninteresting car that favors functionality over any sense of style or panache. I realized I had gone completely into the dull parent in life when I went to look at a new car and thought the nerd mobiles looked like the most sensible choices.

offensive slang A police car. ("Pig" is a common derogatory slang term for a police officer.) Primarily heard in US. They hauled him off in the back of their pigmobile just for talking back to them.

slang A car that is extremely flamboyant and gaudy in design and decoration, as might be driven by or associated with a stereotypical pimp. Primarily heard in US. I remember Uncle Terry used to drive this really tacky pimpmobile back when we were kids. He even had fuzzy dice hanging from the rearview mirror!