It all went down at Drai's in Hollywood this past Sunday night. No word on exactly what the former action star ordered ... but upon racking up the hefty tab ... our source says JCVD dropped a tip that amounts to just over 4%.
We're told the wait staff was not pleased. No duh.
In fairness to Van Damme -- he's from abroad. Folks in Brussels don't live by the 15-20 percent rule. Calls to Van Damme and his people weren't returned.
UPDATE: A rep for Drai's says a 15% gratuity was included on Jean-Claude's tab ... and that his $40 was on top of that amount.