(CNN) -- He may be weird, but he's got his first number-one album because of it.
"Weird" Al Yankovic's "Mandatory Fun" tops the Billboard charts this week, selling 104,000 copies.
The comedian-singer tweeted out: "If you told me 30-years ago this would happen, I never would've believed it. If you'd told me 2 weeks ago, I never would've believed it."
"Mandatory Fun" spoofs many of the current chart-topping pop hits from artists like Lorde, Pharrell Williams and Iggy Azalea. He released a music video every day for eight days promoting the album. The videos have all gone viral.
Jason Mraz's "Yes!" album landed in second place, with 81,000 copies sold. The Black Market "Rise Against" is in third place.
Kidz Bop 26 "Kidz Bop Kidz" and the "Frozen" soundtrack round out the top five.
It is the first comedy album to top the Billboard 200 since 1963 when Allan Sherman's "My son, the Nut" spent eight weeks at No. 1. According to Billboard, a couple of comedy sets came close since then, including Steve Martin's No. 2-peaking "A Wild and Crazy Guy" back in 1978 and a pair of No. 2 Cheech & Chong titles in the early 1970s.