Howard is in the bathroom of Sheldon and Leonard's apartment. He hears a knock from the door as he's changing clothes

knock knock knock

"Coming!"

knock knock knock

"Just a MINUTE!"

knock knock knock

"ALRIGHT! HANG ON! Jeez, you're worse than Sheldon!"

He then runs out of the bathroom cosplaying as Luke Skywalker and opens the door

"Why hello there, you naughty Princess Leila you. You like the size of my lightsaber?"

Only to realize it's not a woman and probably one of his friends, he just now stands there looking awkward

"Um.....I can explain."