The
act of checking your anus and undergarment after
farting a lot. In essence, it is making sure you did not shart.
The word "sheck" is a combination of the words "shart" and "check".
Jerry has been farting all day; he better go sheck.
Person 1: "Is
Jerry taking a piss or a
dump? What's taking him so long?!"
Person 2: "Nah man. He is just shecking."