Ejaculating an unfathomable amount of cum on a human male's back, typically after engaging in homoerotic activities with a male (or trans male).

The word is stemmed from the phrase "light up my back."
"Dude, how was Thailand? Did you get any of their cheap sex massages?"

"Naw dude, I paid them extra to Lhebhard me! It was awesome!"
by justmealvin June 6, 2022
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