John Mulaney and Nick Kroll as George St. Geegland and Gil Faizon on "Oh Hello on Broadway."
Credit: Walter McBride/WireImage/Getty Images

While nothing could stop Hamilton from being *the* Broadway show of 2016, there was one little Broadway production that caught the attention of celebrities and comedy fans alike. Oh, Hello followed George St. Geegland and Gil Faizon as they fought, played pranks on guests, and explained theater for two hours every night. For 138 performances, John Mulaney and Nick Kroll transformed into George and Gil, respectively, donning unkempt gray wigs, drawn-on liver spots, and turtlenecks.

The incredible makeup — which was done by Mulaney’s wife, Annamarie Tendler — required Mulaney and Kroll to have not only their faces aged but their hands as well. During a recent press day for Oh, Hello, Mulaney and Kroll talked about the makeup process and revealed the most dangerous part of it all: old man hands.

Credit: Netflix

The duo recalled trying to quickly get out of costume to see their famous visitors, but their rushed attempts at shedding their (fake) aging skin didn’t always go according to plan. Mulaney brought up a hilarious experience with John Slattery, in which the Mad Men star was distracted by his old-man hands.

Mulaney and Kroll also noted that transforming into George and Gil meant looking at a version of their future selves. “We got liver spots painted on our hands every day and we get to see what we were gonna basically look like as old men,” Kroll said.

Mulaney added that his transformation into an old man was probably most traumatic for his wife.

Now we can all see Mulaney and Kroll as their old and obscene counterparts with their new Netflix special Oh, Hello on Broadway.