Annoy Kain

Cecil's BFF and a guy with awesome dragon armor! Shall we make him cry?

Use his lance to make shish kebabs

Whenever he uses his lance, say stuff about penetration and long thing

During the fight between him and another male character, scream YAOI! After making dirty jokes

RIP OFF HIS MASK!

Keep it as a souvenir

Take pictures of his actual face

Cast graviga while he's in the middle of using jump

Laugh while he's unable to come down

Cast float and watch again

Equip the dragoon boots relic (I think that's what allows characters in ff6 to jump) and make him angry since you're not a dragoon

Complain about the fact that there are no wyverns like the ones dragoons rode in FF1

Ride Kain instead

Ask if her liked it

Jump around like a demented rabbit and declare yourself a dragoon

When he and Cecil separate, say Cecil's dead

Tell him you lied at the most random moment

Take his lance and…

Poke Poke

Go spear fishing and make him clean the fish guts from his lance

Play Limbo with it

Point out the fact that he's the only character who never found love by the time FFIV The After Years