toby jug
Concise Oxford English Dictionary © 2008 Oxford University Press:
toby jug/ˈtəʊbi/
▶noun chiefly Brit. a beer jug or mug in the form of a stout old man wearing a three-cornered hat.
– origin C19: familiar form of the given name Tobias, and said to come from an 18th-cent. poem about Toby Philpot (with a pun on fill pot), a soldier who liked to drink.
'toby jug' also found in these Oxford entries:

