Meredith Vieira ﻿brought up a "bag of sex toys" she once found in Matt Lauer's office -- and you gotta see how Matt expertly tap danced out of the awkward convo.

The now-cringeworthy moment went down in 2016 when Matt and Savannah Guthrie were guests on Meredith's talk show. She put Matt on blast by bringing up the bag she says she found back when she was co-hosing the "Today" show with him.

Matt was quick on his feet, and blamed a sex therapist who had appeared on "Today" -- although Meredith and Savannah don't seem to be buying his memory of it.

The anecdote is interesting now after one of Lauer's accusers told Variety he once gifted a sex toy to a female employee.

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Not mentioned during Matt's guest spot on Meredith's show ... the video TMZ posted of Matt creepily whispering to Meredith, "Keep bending over like that. It's a nice view."