Pharma bro just tried to mock Stephen Colbert -- and failed spectacularly

The former pharmaceutical executive known as "Pharma bro" insulted late night TV host Stephen Colbert -- but ended up becoming the butt of the joke, again.

Colbert mocked Martin Shkreli on his show Friday night, saying he had "a severe allergy to douche."

Shkreli responded with this:

To which Colbert replied:

Shkreli, however, wasn't finished quite yet: