boston ass
A large, pronounced layer of fat under the chin. Similar to a double chin but not anywhere near the girth. Usually found on men, sometimes women. Can be the result of excessive partying/alcohol consumption, over-eating or just being a fat waste. Has a tendency to strike men named Chris during college years.
Jek Porkins of Star Wars: A New Hope has the biggest boston ass I have ever seen. Kevin from The Office is a close second.
Boston ass buster
A benton but one step further, rough anal that causes tearing of the sphincter.
"If you are lucky tonight I'll give you a Boston ass buster"
boston ass gobler
When you insert a Jameson covered potato into an Irish girls anus and then get her to shit it out into her best friends mouth whilst she's sucking on your penis.
Dude I saw my gal last week and gave her the Boston ass gobler, she's wearing a nappy now!