1. To reduce to ruin; devastate. 2. To injure (a thing) irretrievably. 3. The downfall, decay, or destruction of anything important.
"We could have won the game in overtime when Percival had the breakaway on the open net, but he totally ate the cake, and we lost."
"I knew I ate the cake when I got caught making out with the boss's daughter in his jacuzzi."
"Margaret knew she ate the cake when she realized that the neighbour's dog she was looking after ate her retainer."
by Quentin Lancaster April 30, 2008
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Two people who likes each another decide to have sex and there forth there's not longer a relationship , due that fact.

also: after hook up symdrome, when you realize wasnt a good idea for you to have sex, because you really liked the person.
I feel so sorry,I had sex with this person i really like and I guess I ate my cake before the weeding, won't txt, talk to me anymore...
by Latint81 July 18, 2011
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A phrase uttered by someone who has defeated an opponent by a huge margin to their opponent.

Similar in contextual meaning to "I ate your lunch" and "I raped you."
"Hey, you barely beat me at MW2."
"Whatever, loser! I ate your cake!"
by Con-D March 2, 2010
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