Answer:
The lyrics are,
Terrible Tudors
gorgeous Georgians
slimy Stuarts
vile Victorians
woeful wars
ferocious fight
dingy castles
daring knights
horrors that defy descriptions#
cut throat Celts
awful Egyptians
vicious vikings
cruel crime
punishments from ancient times
roman, rotten rank and ruthless
caveman savage fierce and toothless
groovy Greeks
reining stages
mean and measly middle ages
gory stories we do that and your host a talking rat
the past is no longer a mystery
welcome to