Approach the old man slowly. If possible, don't surprise him. Ignore the smell. Shake his hand if you want, but I don't. Eww.
Nod approvingly when he mutters. Laugh when he snickers. Ignore the spit. Don't ever ask him a question, never ever. Got it?
Other than those things, everything is normal. Except his memory and other various thoughts. Ignore the freeze. Comes with the territory, tell no one. Sharp as a tack.