In the picture, Mugume is wearing a skirt and he revealed that he was participating in primary school drama.
Fellow NBS employee Amal Kansiime asked him via Twitter: "MDD [music, dance and drama] Performance??"
He responded: "Yesssssss."
According to publicly available information, Mugume, now a news anchor, reporter and talk show host, was born in 1995.
He went to Mbarara Municipal Primary School for his primary education, Mbarara Secondary School and Lutembe International School for his 'O' and 'A' level education respectively.
He holds a degree in information technology and computer engineering from the International University of East Africa.
His foray into media started with Radio West in Mbarara where he was a news reader for content tailored for children between five and fourteen years.
He also conceived an idea to start a newspaper when he was still in high school. Before joining Next Media, he worked with Channel 44 and trained at Urban TV.
Mugume is not the first to share throwback content and below are some old pictures of celebrities that you might be a fan of.
There is Alex Muhangi, Gen. Salim Saleh, singer Levixone, Eddy Kenzo, Spice Diana, Sheilah Gashumba, Eleanor and Mathew Nabwiso, Grenade Official and Sheilah Gashumba.
This reporter has also previously shared throwback pictures and videos of Rema Namakula, Lydia Jazmine, Zex Bilangilangi, Geosteady and Prima Kardashi, Spice Diana, Zahara Totto and Precious Remmie.