Difference between Fridge function and Virtual function

LOL, that is one of the best fridge functions!

But, joking apart, can you think what Ankur might be referring to here? May be there's some word that sounds a bit like fridge which can be applied to functions.

A fridge function is where you actually get a beer out of the fridge
A virtual function is where you sit  thinking of drinking a beer

Well, I've been using C# since the first beta a dozen or so years ago and I've never heard of a fridge function! 

Googling it has also yielded a blank.

However, a virtual function (or method as they usually called in C#) is a function which can be overridden in sub-classes which want to provide their own implementation of it.

At runtime, the actual type of the object (not necessarily its compile-time type) determines which version of the virtual method to call. For example, if SomeMethod is a virtual function of the Parent class which is over-ridden in the Child sub-class:

Parent p = new Parent();
p.SomeMethod(); // calls Parent's version
p = new Child();
p.SomeMethod(); // calls Child's version because 'p' refers to a Child object, not a Parent object