Top Definition
The term "light er up" refers to the act of lighting up any number of smokeable items, such as a bong, pipe, joint, blunt, ciggerette, or cigar. The "er" is an abbreviation of "her", the her refering to whats being lighted.
*rolls blunt*

"light er up son"

"son you blazed that joint goood"
by avonbarksdale September 02, 2009
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