Spies do judge books by their covers. Michael tells the viewers this as he explains why it's difficult to forge a document. The clip is courtesy of the episode "Blind Spot."
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Michael deals with Fiona and his mother in this scene from the episode "Blind Spot." The latter isn't exactly pleased with how her son has handled Jesse.
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Burn Notice Season 4 Episode 11 Quotes

Sam: I think it's time for some Chuck Finley action
Fiona: His name is Charles, you need a new cover id.
Sam: Sorry Fi, I don't think so, Chuck Finley is forever.

Fiona: So you and Jesse are poking Barrett with a stick. Why does the term "sitting ducks" come to mind?
Michael: Jesse and I are pretty well armed ducks.