yadded means when one is very high of a wax pen

The most sarcastic, nice and mysterious person you’ll meet. Yads are very rare, if you find one, don't lose him!

The term YAD is the acronym of the expression "Ya dude" and is often used in text messaging or on websites like Twitter which often require a word limit. The word YAD is most often used in replacement of the word "yes" to express great enthusiasm and excitement in their response. This term is most frequently used in Santa Cruz, CA but is soon to be proclaimed a part of the California slang.

Yad means strange

A word used to terminate a conversation over the Internet if the conversation is particularly pointless or going nowhere.

yads stands for "you're a dick sometimes."
used in internet conversations hinting some to quit being a dick, or huge jerk.

backwards spelling of day.