I'd like to find an English expression, which is synonymous to, e.g., 'lie like a trooper', but with a that-clause in its structure i.e., he lies (so much) that + idiomatic expression. For example, in German, a corresponding expression with a dass-clause is 'lügen, dass sich die Balken biegen' "Er lügt, dass sich die Balken biegen" ("Er lügt sehr")
Note: 'that' is not necessarily overt. An expression with a similar structure is '(that) one could cut it with a knife', as in 'The smoke was so thick (that) you could cut it with a knife.', to imply a very thick smoke).