LETTER BANK XXXI

In a letter bank, the letters of one word are used - and repeated as necessary - to spell a longer word or phrase. No other letters are allowed. For example, IMPS is a letter bank for MISSISSIPPI.

In the flat below the keyword FIVE is the letter bank (and also the number of its letters). The small s is not part of the letter bank.

Laughter FIVEs as the old NINE
Ventriloquizes funny lines;
He moves the head, the legs, the arms,
In this art that never ceases to charm.

Answer:

ERUPTs
PUPPETEER

Credit:
The Enigma 
January, 2020
BROBBERTY