have a stab at something/at doing something

have a stab at (doing something)

To attempt to do something; to take a turn trying to do something. Well, I haven't fixed a motor in nearly 10 years, but I'll certainly have a stab at it. You had your chance, now let your sister have a stab at trying to break the piñata.
See also: have, stab

have a stab at something/at doing something

(informal) try something/doing something, especially if you have never done it before: I had a stab at fishing once but I found it boring.
See also: have, something, stab