Lindsay Lohan's Mom Dina Lohan Stiffs Charity?

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Dina Lohan basically stole $2,500 from a charity after walking out on the bill for a fundraising dinner in The Hamptons. Oh, I'm sure she's mailing a check right now. A very "bouncy" check, if you will.

From the New York Post:

[Dina] and her brother [Paul Sullivan] were offered four complimentary tickets to new East Hampton restaurant hot spot Andrra on Saturday night to watch the Great Bonac Fireworks Show to aid the nonprofit Clamshell Foundation, which supports local health, cultural and education projects.

But Dina and Paul arrived for the seated dinner with eight others. A source told us, "They dined and dashed on a $2,500 check and didn't leave a dime for the waiters. The understanding was they would get four free tickets. Anthony stormed up at the end and said, 'What is this check for?' Organizers offered a reduced bill for around $1,100, but then they just upped and left without leaving a tip. When organizers later phoned him to demand payment, Sullivan said, 'My celebrity clients were not happy.' "