Tmesis in English

     One kind of tmesis involves the insertion of a word or phrase into another word, often for humorous effect. The  insertion may occur between the parts of a compound word, or between syllable boundaries (dystmesis), but always preceding a stressed syllable (e.g. one would never say, "Ab-bloody-solutely", preferring "Abso-bloody-lutely").

It is also sometimes referred to as tumbarumba, possibly due to the popularity of tmesis in Australian English dialect (Tumbarumba, New South Wales being an Australian town), or possibly due to the poem "Tumba Bloody Rumba" by John O'Grady, which includes several tmeses including "Tumba-bloody-rumba", "e-bloody-nough", and "kanga-bloody-roos".