End your virginity while you are still a teenager.

So urges a Wakayama-based group of youths distributing contentious flyers that have gone viral on social media over the past few days.

The flyers, punctuated with witty catchphrases and occasionally risque jokes, are part of an attempt by the five-member group to encourage teens to vote in Sunday's Upper House election and abandon their "virgin voter" status as soon as possible.