1- left over particles of feces lingering at the bottom of the toilet, nearly unflushable and as fine as silt. 2- Small particles of shit and or toilet paper or other very small pieces of anything lodged in your ass crack after wiping, usually discovered when washing your ass-crack during a shower.
"I tried to flush away the remaining shiticles before my girlfriend came over, but they just wouldn't dissipate."
The action of tickling someone so vigorously and relentlessly that they shit themselves from laughter. It is used to humble and humiliatepeople who hate being tickled.
"If you don't stop singing that stupid song, I'm going to shit-tickle you."