Tom Hiddleston was about ready to look for a "getaway car" after an interviewer not-so subtly brought up his ex, Taylor Swift ... leading to a seriously awkward interview moment.

Watch the video ... Tom discusses his evening routine -- which includes binging sports highlights -- with "Heart" radio host Devin Griffin ... who then, out of the blue, name drops Taylor and her love of making sourdough bread. Getty

Tom is notably confused by the pivot in topic, blinking stoically in response and offering up little comment on the fun fact.

It's unclear if Devin merely forgot about Tom and Taylor's past or if he was trying to get TH to confirm that he caught Tay's appearance on boyfriend Travis Kelce 's "New Heights" podcast. Regardless, it made for an uncomfortable exchange be

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