Submitting to an unpleasant sexual act as punishment for bad behavior. Generally implies anal sex, but may also include cum sucking, fisting, and/or a golden shower. The phrase is derived from the fact that while at the dinner table with your mother, eating one's vegetables (in a literal sense), while unpleasant, is inescapable.
A. After being chastised by her husband for speaking out of turn at the dinner party, Elizabeth blushed, realizing that soon she'd be on all fours on the bedroom floor, eating her vegetables.

B. "Eating one's vegetables," proclaims Mr. Thelsby as he pushes his plump erect pecker into his wife's bunghole, "is certainly the most appropriate penance for failing to properly shine the shoes of one's husband. Don't you agree, dear?" "Mfff," says Mary.
by SaveOurSkyline April 3, 2007
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Said of an individual, circumstance or location perceived as insidiously annoying. Usually one discerns the circumstance after a brief period of interaction with said annoyance.

From direct translation of the Hebrew saying popular in Israel.
Eating One's Brain example:

Last time we were there, the guy was eating my brain.

Let us go, this place starts to eat my brain.
by Tiger What Woods January 15, 2014
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If someone has to go through bad times, take something in order to pay his dues he eats or has eaten his broccoli.
He's eaten his broccoli. He went to jail and is ready to start a new life. eat one's broccoli
by jesse87 May 29, 2013
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When a significant other's weight can be questionable, the need to help eat their food so that they won't.
Guy 1: Dude, I thought you didn't like apple pie?
Guy 2: I don't, but Jen was getting it regardless so I had to eat one for the team.
by jamcan162 January 16, 2010
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