"As easy as Pinkie Pie": Honestly, keep that."Hot nuts": Not even an MLP example, plus it's a mondegreen.
"The Hub Summer": Sounds more like Misaimed Marketing because I doubt the song in context isn't intentional innuendo.The bridles thing is just Fridge Logic, and I'm not sure if that counts here.The brony fandom also decayed any example of half-lidded eyes to be "bedroom eyes." I'd be curious what they have to think about ComicStrip.Garfield's default expression. Screencaps: If you have to pause the frame at just the perfect time to get the innuendo, then it's probably not an example.