17 pounds

I proceeded to assist the customer in checking for corrupted data. As our test was running, I hear WHAM, WHAM, WHAM, BAM, BAM, BAM, BAM, BAM, BAM!!!!!!!

"What a slob." he mutters.

"Is everything okay, sir?" I ask.

"Sorry about that," he tells me, "I'm sitting at this girls desk and she's got 17 pounds of crumbs in her keyboard."