So sayeth the Mass Effect Wiki:

Tali's combat drone is nicknamed Chikktika vas Paus, a subtle reference to Baldur's Gate II. Chikktika Fastpaws is the loyal raccoon familiar of Baervan Wildwanderer, a gnomish deity worshiped by Aerie. When Chikktika is summoned, Tali will occasionally cry, "Go for the optics, Chikktika! Go for the optics!", a reference to Baldur's Gate II's Minsc, who shouts, "Go for the eyes, Boo! Go for the eyes!" to Boo, his miniature giant space hamster.

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CdrMike, Overwatch Reject