There are tons of threads on every type of cockblocking.
Some recent examples, including the exact same procedure you're describing:
Combating the "wrist clutch and pull" cock block maneuver
Bartender cock-blocked me
Worst or best cockblock stories
Some recent examples, including the exact same procedure you're describing:
Combating the "wrist clutch and pull" cock block maneuver
Bartender cock-blocked me
Worst or best cockblock stories