Wikipedia
A Heffalump is a type of fictional elephant in the Winnie the Pooh stories by A. A. Milne. Heffalumps are mentioned, and only appear, in Pooh and Piglet's dreams in Winnie-the-Pooh (1926) and seen again in The House at Pooh Corner (1928). Physically, they resemble elephants; Shepard's illustration shows an Indian Elephant. They are later featured in the animated television series The New Adventures of Winnie the Pooh (1988–1991), followed by two animated films in 2005, Pooh's Heffalump Movie and Pooh's Heffalump Halloween Movie.
Usage examples of "heffalump".
Gnossos Pappadapolous, and the monkey demon was chasing him and his buddy Heffalump through New Mexico desert.
But not Heffalump, the only human being Gnossos ever genuinely loved: Heffalump was down, and Gnossos was hip too late.
You started a benign conversation about Heffalumps and before you knew it you had been shoehorned into some mortifying charade.