godan verb (-ku)
Casual verb for playful, silly, or lighthearted behavior; often used when someone is joking or not being serious. Cross-referenced with 巫山戯る (ふざける), which is the more common form.
See also: 巫山戯る
子供たちが公園でふざいている。
The children are frolicking in the park.
ふざくのはやめて、真面目に話を聞いて。
Stop fooling around and listen seriously.