USC's Zach Banner is large ... watching him do tiny activities is epic

Nothing says funny like a 6-foot-9, 345-pound offensive lineman at a kid's tea party.

USC's Zach Banner is the largest player in college football ... so the Trojans athletic staff invented a web series showcasing banner doing 'the tiniest things', which debuted Tuesday on social media.

It's worth your time ... and a few laughs for sure!