How many lines does a limerick typically consist of?

• Limerick is - A funny short poem.
-মূলত এটি হচ্ছে পাঁচ লাইনের মজার ছড়া।
- A popular form of short, funny verse that is often nonsensical and rude. Rhyming like aabba. 
- The first collections of limericks in English date from about 1820.

• Example of Limerick - 
'There was an Old Man who supposed
That the street door was partially closed;
But some very large rats
Ate his coats and his hats,
While that futile Old Gentleman dozed.'

Source: website Lecture.