Pronounced sha-nan. It is an abbreviation for the word shenanigans.
Usually used when something has gone on to long and the anger will not allow for a word as long as shenanigans.
"I have had enough of this shanan! You've been messing around all afternoon."
Sounds like "Shannon" but there is a definite difference to this name. Usually used only for the most fabulous and sparkliest of all females. Know for her affinity to makeup and glitter...a "Shanan" can commonly be found at your local Sephora store or Michael's in the glitter section just staring and taking it all in!
Did you see that new Super Ultimate Bedazzler for sale? That is soooo "Shanan!"