How to pass variables to users?

Ok, I have a site where users can post events, rate them, attend them (everyone can see who will attent) and such.
Now I want to make it so you can add variables to users, which resembled what they did.
for instance:
User: Anon had a red jacket and was drunk.

Then I would like a drop down list that is unique PER event with these variables which the users can add to their own profiles. (so everyone can see what they did/had at that specific event)

Now I tried messing with views and references and such but It didnt work.
Then I tried to do it with a poll which would work but is not unique per event.
Any ideas?
If you have any more questions feel free to ask.

Again, the result:
-Add variables to users
-Unique PER event
-Multiple choices possible
-Visible by other users
-Visible on own profile

Thanks in advance!