跋前踬后

Explanation: Postscript: step; stumble: to be tripped. This refers to the wolves to move forward to slam his neck meat, to the back will be tripping over his tail. Metaphor of a dilemma. 　　Usage: Joint type; as predicate; analogy dilemma 　　Source: Han Yu Tang "Changli _set_ into the school solution": "But the public not see the letter in person, private but not help the Friends. Postscript to stumble upon the former, being reproached." 　　Examples: No matter the time, hope shadow hiding, ~, the sun does not talk to students. (Qing Ji Yun "Notes of Luan Yang continued record") Thesaurus:  be frequently taken to task, Bahutuwei, Baqiantuhou, Postscript Hu