To be extremely pumped or excited about something.
Adriana got all juiced up for the Lil Wayne concert by pre-gaming in her dorm.
When a woman's vagina gets wet from instantly getting aroused. Whether it be from the sight of someone extremely good looking or she is just suddenly horny. The female equivalent of the male boner.
"He is so sexy. Every time I see him I instantly get juiced up."
"The other night I came home and he was doing the dishes. Just the sight of it got me all juiced up."