Attention Eater 

When a person constantly talks, tweets and photographs the things that they've eaten. This is usually done so they can show off or shock others.
Skinny people tend to be attention eaters, uploading photos of cake or big roast dinners to Instagram with the caption "OMG, can't believe I ate all that #fatty.' They feel like sharing their food, means sharing the calories. Attention eaters will also tend to talk more about the act of eating food, than actually doing it.

"Michaela is such an attention eater. Her Instagram gallery contains the most calorific food, yet she's a size 8. I bet she doesn't even eat half of the things she photographs."

"God, you're such an attention eater. Stop showing off with all your homemade cakes and 5-course dinners."

Attention Eater by delaforbes April 11, 2013