Safian

Find a girl named "Safa" and a boy named "Ian" then start screaming "Safian" (Saf-ee-an) to annoy them. If they get irriated by that name, just use the word "Sophian" (Sophie-An) so they get confused. They won't do anything if you call them that though so just do whatever you want with them.

Person 1: BAHAHAHHAHA LOOK IT'S SAFA AND IAN! Let's scream out Safian!
Person 2: AHAHAHHAH sure why not?
Both: SAFIAN, SAFIAN, SAFIAN, SAFIAN.
Ian: Stop.
Person 1: New word!! (Sophian)
Person 2: Oh yeahhhhhhh
Both: SOPHIAN. SOPHIAN, SOPHIAN, SOPHIAN.
Safa: What are they saying? Pffft

GISIC

if you ever find a girl named "Giana" and a boy named "Isaac" scream "GISIC" (JAI-ZIK) out loud to them so they know who you are.

Person 1: Oh! Dude it's Giana and Isaac! Should we scream "GISIC" out loud?
Person 2: That is GISIC sure let's do it!
Both: GISIC GISIC GISIC GISIC GISIC GISIC
Isaac: Oh no they're shouting "our name" out loud.
Giana: Run...