self-mockery ；

[例句] 沙伦以幽默自嘲的口吻讲述那一夜的故事。 Sharon tells the story of that night with self-deprecating humour.

[例句] 这确实是一种嘲弄, 但是在这种嘲弄之中,他的灵魂却在自嘲! A mockery, indeed, but in which his soul trifled with itself!