a slow and/or sluggish moving shopping cart; these are left by smart shoppers at your neighborhood grocery store because they are blessed with faulty wheels or their axles arent properly lubed; Wangdongs cause anger because when pushing a wangdong you must exert non-equal forces with your arms in order to push the cart along smoothly, thus making one arm tired while your wangdong skids along the floor of each isle.
Yolanda: Hey, look at that guys wangdong, its totally draggin.
Frodo: I once had a Wangdong like that, except i exchanged it before it sent me into a vortex of spiraling fury.
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.