sow your wild oats
US /soʊ yʊər waɪld oʊts/
UK /soʊ yʊər waɪld oʊts/
1.
to behave in a wild, irresponsible, and sexually promiscuous way while young
:
•
He spent his twenties sowing his wild oats before settling down.
•
Her parents were worried she was sowing her wild oats too much.