To encourage and otherwise exhort a fellow user of the UD to give a "thumbs up" to a word you have just defined/submitted to UD. Being thumbed up can really be a very pleasurable experience, it is said.
Having asked all her friends to click on her definition of figgy, Woofie was satisfied with the thorough thumbing up she received. Some of her friends, however, were thoroughly weary of her constant requests to "Thumb me up!"
by w00fdawg September 07, 2005