I get the drug interpretation, but that's not how I interpret this song. She's sick of her life, she's bored, in a rut. She wants fun, something different and outside the normal for her, but she doesn't want to permanently turn into somebody/something else. She wants to embrace being out of her element for a little while because she's sick of feeling trapped. She doesn't care where she goes, what she does, or who she's with, she just wants excitement.
I get the drug interpretation, but that's not how I interpret this song. She's sick of her life, she's bored, in a rut. She wants fun, something different and outside the normal for her, but she doesn't want to permanently turn into somebody/something else. She wants to embrace being out of her element for a little while because she's sick of feeling trapped. She doesn't care where she goes, what she does, or who she's with, she just wants excitement.