A Blue skully, otherwise known as a Blue Skullcap (scutellaria lateriflora), is an indigenous flower that grows near the banks of rivers in North America.
When taken in copious amounts, blue skullie's act as a nervine agent and promote a feeling of tranquilizing effects on it's user. If too much is taken, one may meet the reaper.
Blue Skullies have often been comparied to Xanax and barbituates.
John: Hey man, I want to drop some xanax but I don't want to piss dirty.
Jennie: Just pop a blue skully. It wont come up on drug tests.
John: What the what is a blue skully?
Jennie: It's an all natural, over the counter flower that will get you faded