Masturbation. Male, you have to work at doing it wrong. A friction burn is about the only thing that can happen from doing it dry for too long with too much pressure.
Female, using something with sharp or rough edges, going too deep or too big. Also doing it too long and causing abrasions. In either case, you really have to work at doing it wrong.
healthy food
safely
most safely
more safely
comparative of safely is more safely and the superlative form is most safely
we have arrived safely, thanks
How to safely deal with animals.
How to safely deal with animals.
How can you use medicines safely
How to safely deal with animals.
The passive form of "Did you reach your home safely?" is "Was your home reached safely by you?" which is very awkward indeed.
They returned safely to Earth. He was unable to safely cross the street.