The submitter’s co-worker uttered this beauty. It is a mashup of “speaking out of turn” (to say something unwise or imprudent, or saying something at the wrong time), and “speaking with a forked tongue” (telling lies or to try to deceive someone). “Speaking in tongues” (a person is speaking in a language unknown to him) might also be in play here, but I do not know the speaker’s religious background. The speaker might have been thinking about sticking out his/her tongues as well. In any event, kudos to Phillip who heard this one and sent it in!