Habanero peppers.
I offer them a plate of brains stuffed with those peppers. When their mouths burn, they shall flee to the nearest lake for water.
But unknown to them...I laced the water with
laxatives! Yes! And when they go to the bathroom, it will be with horrible diarrhea from the laxatives and peppers! And then..... THEY'LL NOTICE NO TOILET PAPER IS LEFT, LEAVING THEM SITTING ON THE TOILET FOR ALL ETERNITY! MWAHAHAHAHAHA!
Kimi wa ne tashika ni ano toki watashi no soba ni ita
Itsudatte itsudatte itsudatte
Sugu yoko de waratteita
Nakushitemo torimodosu kimi wo
I will never leave you