Which ranks highest on the nasty scale?

I will give you three choices. I will not name any names.

1. Wiping boogers on the back of the rails of the bed's headboard.

2. Removing an entire toenail after an injury and placing it on the bathroom counter for sport.

3. Blowing one's nose loudly into a cloth napkin in a restaurant around others who are eating before tossing it on the table and leaving.