He used a small pair of scissors to trim his 'mustache'.
The actor was wearing a false/fake 'mustache'.
a 'mustached' man [=a man who has a mustache]
(..) that'll make him less obnoxious? Drinks do not work that way. I'd say he's doing fine. Look at her. The last girl my mom set me up with had a mustache and a vestigial tail. - Sorry I'm late. - What happened? Nothing. I just really didn't wanna come. Virgin diet Cuba Libre, please. - Okay. (..)2007 TvShow: The Big Bang Theory Title: The Grasshopper Experiment Season: 1 Episode 8