- Greeting people by referring to phenomena of the past and future; some examples might be: “What spectrum will today’s broadcast be in?” or “Is this song available on 78?” or “Can you direct me to the nearest sleep deprivation chamber?”
- Walking up to random people and asking them, “What year is this?” and on hearing their reply, muttering (after a moment’s pause), “Then there’s still time” before hurrying off.
- Standing in front of a statue, falling to your knees, and yelling “Nooooo!”
- Dressing in moderately anachronistic clothing and speaking in slang from varying decades.
And much thanks to Dave Away from Home for this one.