A mixed metaphor
After two martinis, Bill was spewing malaphors like "he'll do anything at the drop of a bucket" and "we missed our door of opportunity"
by Gerry Todd September 11, 2010
a mixing of two idioms, commonly resulting in an alternate meaning of the statements
Jim's favorite malaphor is "I'll burn that bridge when I come to it."
by Krose240 March 19, 2015