Dictionary / Vocabulary / 発動
はつどう
putting into operation; invocation
common word
春機が発動して、ソレをナニしたい盛りなのは理解するけど、・・・まあ、そこにお座りなさい。
I know you're at an age where sexual desire flourishes and you want to do 'you-know-what' with 'that' but... well, sit down there.