A statement used to replace a term such as "Swear to God" to really put the point across that you're telling the God honest truth. If it's obviously a lie and someone claims "mums", their mum is thought to die.
Person 1: Did you transfer me the money?
Person 2: Yeah bro of course
Person 1: Say mums
Person 2: Mums cuz
slip of the tongue perhaps,
Those idiots who drive around in a ridiculously raised pick up truck, making a top heavy vehicle even more top heavy and unstable
A:*gah*
B: "Whats the matter"
A: This dam prickup is blinding me.
B: Stupid thing's, as if there lights weren't blinding enough as it is.