Here goes, prepare yourselves:
"Double-Dipping" and even "triple-dipping" your tortilla chips will not contaminate the salsa or the guacamole!
The study was conducted by Nancy Zeller of American University. And if this weren't a weekend, Crabby would go Google you up a link, but it is so she won't. Feel free to report back, though, should any of you feel energetic and researchy yourselves.
Professor Zeller, inspired by a Seinfeld Episode (which seems as good a reason as any to conduct a study) tested the bacteria content of various dips after students dunked, dunked, and dunked. After an hour, even the dips with some dairy ingredients had surprisingly little bacteria in them. And the salsa and guacamole had virtually none!
Which is good news, at least inasmuch as "virtually none" is a reassuring quantity when it comes to something fast-breeding and invisible like bacteria.
Crabby, while not known for her impeccable food hygiene habits, would never dip the same chip more than once. Oh hell, that's a total lie, but she double dips only when sharing appetizers with the Lobster or relatives or friends at parties drunk enough not to be paying close attention. (Just kidding on that last one, she swears).
By the way, Cranky Fitness could have missed this important bit of research entirely had the Lobster not drawn her attention to it in Parade Magazine this morning. Crabby is pathologically afraid of Parade. (It's that wholesome family insert you get in your Sunday paper). It's those ads! Terrifying large-eyed figurines, alarming dishware, and "special issue" commemorative coins reeking strongly of scamminess... it makes her feel all depressed and dizzy!
It must be Parade and not the guacamole, right?