Used when someone wants to be the center of attention, often in a showy way. At the awards ceremony, he was giving it large with loud jokes and flashy clothes.
Pro Tip 2/3
Possible Negativity
Can imply that someone is being too loud or showing off more than necessary. She really gave it large at the meeting, and it turned some people off.
Pro Tip 3/3
Exaggeration Warning
Be cautious: someone 'giving it large' may be overstating their abilities. He's giving it large about his new job, but I doubt it's as glamorous as he says.