Frank, a limerick is supposed to scan properly, and has 5 lines rhyming AABBA. A clerihew is the four line one with arbitrarily silly line lengths rhyming AABB, with the first line being someones name:
Likes to shock.
If you're easily enraged,
You probably should avoid Reading Gonzo Engaged
's hopes are growing fainter
of his Chris Locke interview going ahead.
He'll just have to keep speculating about packet routing and Quality of Service instead.