Over and over, for fifty-three years now, since 1827, when the first such celebration started spontaneously, no one knows how.

She spontaneously starts to sing in order to explain to him how he should show his affection for Nancy.

Some say it started spontaneously 80 years ago with a group of friends who wanted to play drums outdoors.

Kids don't just start spontaneously talking about their feelings at 15.

You are going to spontaneously start doing vile things because you now know?

Without much further suggestion by me, he spontaneously started using the toilet a week after his third birthday.

The strike started spontaneously on 24 October, without any leadership or organizers.

"Facts affirm that the events did not start spontaneously," the newspaper said.

Their plot failed however, because when the correct day came, Seleucus' soldiers spontaneously started to build the city.

Thorium is so stable, it can't even spontaneously start a reaction on its own.