Thursday is March 14th. Math fans may also know it as "Pi Day"

The day celebrates the rounded number of 3.14. It's the ratio of a circle's circumference to its diameter.

And what better way to celebrate than with some pies.

That's exactly what students at L.B. Morris Elementary School did. The kids got a chance to throw whipped cream pies at their favorite teachers, staff, and PTA members.

The kids paid $3 to throw each pie. All money raised benefits the school's PTA.