It's the shitty poorer version of a sugar daddy. Usually they are slightly past middle-aged. Also they tend to go for the "less pretty girls." Essentially both a Splenda Uncle and the "less pretty girl" are settling for what they can get.
Jessica: "Shelly, what about him? He seems okay."
Shelly: "I guess... but he's definitely not a sugar daddy."
Jessica: "Of course not. But he could be your Splenda Uncle!"
Shelly: "I guess... but he's definitely not a sugar daddy."
Jessica: "Of course not. But he could be your Splenda Uncle!"
by leahylives4ever April 14, 2017