yǐ​zhǐ​náo​fèi

to overrate one's capability

Senses

以指挠沸/ 以指撓沸 yǐ​zhǐ​náo​fèi to overrate one's capability

literally meaning to stir boiling water with one's finger; to overestimate one's power to the point of certain failure or self-harm

References

synonym 以指挠沸/以指撓沸 以卵投石/以卵投石
see 以指挠沸/以指撓沸 荀子/荀子