To raise one to the 2(root)2 power. It comes from the mathematical expression - the square root of 2, multiplied by 2.---(2√2) By raising a person to the 2root2, you put them to sleep. This action is specifically performed by foreign math teachers with heavy accents who repeat the phrase over and over again in a monotone, putting the person to sleep.
Note: this phrase is often spelled 2 rrrrroot 2,,,,notice there are multiple R's,,this puts more emphasis on the European accent.
Student 2: "Damn!!! She just raised yo ass to the 2 root 2!!!