When you have sex with a Fleshlight stuffed under a couch cushion.
GlurbleFluckering is when you have sex with a Fleshlight stuffed under a couch cushions.
"I think I'm going to have a nice GlurbleFluckle"
"What's that"
"Oh, it's when you fuck a couch with a Fleshlight
"Oh, I think I'll try it too!"