"Oh Shit" vs "Oh Shruk"

My this noti girl had been saying "Oh Shit!" for the passed week. I thk she pick up from my hubby!!! I forbid this word in our family including my hubby, than to my surprise...last night i heard this naughty girl said "Oh Shruk" ! She still told me " mommy.."Oh shruk" is the same meaning with "Oh Shit"!!! I almost fainted