Guy #2: Indeedly, he is.
Guy #1: I'm wearing women's underwear...
Guy #2: (slaps face in disgust)
It's basically the same as indeed, only you get to add an extra word after it, to sound more official and cool. Like bow ties. Bow ties are cool.
"Indeedly so, my good friend."
"Bow ties are cool."
"Indeedly so, doctor."