Wiktionary
sow one's wild oats
vb. 1 (context idiomatic of a male English) To spread one's genes around by impregnate many females. 2 (context idiomatic of a male or female English) To experiment sexually with different partners before a more serious marriage, especially a rich or powerful young male. 3 (context idiomatic often of young adults or the recently divorced English) To indulge in a period of irresponsible behavior.
WordNet
sow one's wild oats
v. live promiscuously and self-indulgently [syn: sow one's oats]