The Act of confusing a co-worker by chasing him around making pinching gestures while he is engaged in a serious conversation with a customer on the phone.
Grabass or grab-ass is stupid horseplay.
Grab-ass is always associated with men and boys trying to avoid work or some other responsibility.
Commonly used in the Southern States.
The boss sees his workers fooling around and wasting time. He says, "OK let's stop the grab ass and get to work."
Elderly, female visitors to National Historic sites frequently open this while having their picture taken with costumed employees of the site. They are often, but not always, from Quebec.
Wow. That elderly lady just opened a can of grabass on me. Dave would have loved it.