Let us today talk about those plural forms which are again made plural by many by adding ‘s’ to them i.e. double pluralisation.

* Your feets are so dirty.
* These childrens are making a lot of noise.
* I just saw three mices there!
* Give me all the informations that you have.
* Can I have a look at the furnitures kept at the back?
* I saw three deers running around those trees.
* These clothes are for mens.

You must have already noticed in the statements above that the plural forms are pluralised again which is grammatically incorrect. They should just have:
* feet
* children
* mice
* information
* furniture
* deer
* men

Information, furniture and deer are same in both singular and plural forms.
So, next time consciously avoid double pluralisation.