(To). To act in an unusual manner.
“The quietest fellows are forced to fight for their status quo,
and sometimes to cut capers like the rest.” —LeFanu: The House in
the Churchyard, p. 143.
To cut capers
(in dancing) is to spring upwards, and rapidly interlace one foot
with the other. Cut your capers!
Be off with you!
I'll make him cut his capers, i.e.
rue his conduct.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894