Two limericks

That is no hat, it’s a lion;
The label says its name was Brian.
To think that it’s dead
And sits on your head.
Thank the Lord it’s not Ariel from Zion

I like to read medical humour
Or tales about school childrens’ bloomers.
Do they still err at subtraction
And large vulgar fractions;
Or start off  wild hysterical rumours