11:44 AM PT -- Howie Roseman's clearly doing fine ... he just addressed the Philadelphia crowd with the Lombardi Trophy in his hand and yelled, "I bleed for this city!"

Howie Roseman apparently needs some pass-catching pointers from A.J. Brown ... 'cause the Eagles exec just sustained a facial injury out at Philadelphia's Super Bowl parade following a failed beer can toss.

Check out some photos of the Philly general manager on Friday ... he's walking the parade route with a big ole gash on his forehead -- after he reportedly couldn't snag a flying alcohol container from a fan.

Thankfully, while the wound looks gnarly, Roseman's remained in great spirits. He's actually been spotted with a smile on his face ... and a stogie in his mouth!

Roseman's mishap was hardly the only notable alcohol incident at Philadelphia's title celebration ... in fact, at least one other person on the Eagles' busses was drilled by booze earlier in the afternoon.

The players, meanwhile, have been guzzling suds from the jump of the day's festivities ... as many -- including Saquon Barkley -- have been seen chugging cold ones with Birds backers for hours.