Short for "celebration" often used in the sports world after scoring a sick goal, having a filthy dangle or in the normal world, after scoring with a hot babe. A celly is not a party; rather it is a brief expression of joy, such as a fist pump. Also used in general terms when the full word "celebration" is too lame and thus inappropriate for use.
"Hes havin' a fuckin giant celly right now... I bet he got some poontang earlier."
By Shirline
Celly
One of the greatest rewards when someone scores a goal in hockey. It can be a short celly, or a group celly in which the whole team joins in. In most bender leagues, a goal scored may not count unless you celly. Bigger games mean bigger cellys.