I recalled a very random ship concept that popped to mind years ago, so that's what I've decided to have in this prompt (Crossover ship/Rarepair)
Slender X Toriel. (Don't ask, I really can't explain aside from them both being parental figures in their respective fandoms or something)

Slenderman is a Creepypasta, Toriel originates from Undertale!

Two fun facts:
1) I don't think anyone has done this ship before, but it's not hard to imagine why. There's a lot of reasons.
2) Depending on the source, Slender is actually shorter than Toriel! (Toriel is ~8 ft tall while Slender man is around 7 ft OR 15 ft in the games and literature respectively)