Crossword puzzle clue "if you take it more than seven times you're supposedly legally insane"

If you take it more than seven times, you're supposedly legally insane

Supposedly insane Roman ruler

New age artist who has supposedly sold more records than Nirvana and the Spice Girls, although I can't name one of her songs

More insane

Its southern border is about seven times longer than its northern one

The more you take, the more you leave behind

Defensive response to "You're insane"

"___ you insane?!"