Irreverent
Part of speech: adjective
Definition: Lacking proper respect or seriousness; sarcastic. Disrespectful, cynical, cavilling, querulous, or vulgar, where one's own feelings, or especially deference to the feelings of others, customarily command silence, discretion, and circumspection.
Example sentence: I wanted to make youthful, irreverent anthems. Parents might not get it, but kids would.
Impertinent
Part of speech: adjective
Definition: insolent, ill-manneredirrelevant (opposite of pertinent)