Pertaining to a state in which one holds a
capricious - but nonetheless strong - liking,
inclination or desire. Usually used with a meaningless modifier such as all, totally, or mad.
See also:
Busey
"
I'm glad we stopped here to eat. I've been
Gary Busey for their pizza all week"
"He's totally
Busey for her; he writes about her every day in his blog"