Brandon Price, 19, and a 15-year-old boy, who cannot be named, "whooped with excitement" after killing Jack Norton in front of two of his female friends.
Both defendants, from Walsall, were found guilty of murder following a trial at Wolverhampton Crown Court in November.
Price was jailed for life to serve a minimum of 20 years while the youth was ordered to serve at least 15 years behind bars.