Double-double, animal style

This is not an In-N-Out endorsement.

But it is an opportunity to wish you a delightful start to the summer, and if an In-N-Out milkshake (syrupy and bland as it may be) or packet of starchy, tasteless fries is how you celebrate, then I guess I'll see you in the drive-thru.

Full disclosure: I have no strong feelings about California's favorite calorie factory, but I'm experimenting with engagement bait to boost my solver numbers. Please, tweet about this if you're mad and make sure to link to the puzzle so other people can share in the outrage!!!

Secret menu of links:

• 19-across: Nature is, indeed, full of horrors
• Here is the map of 29-across pronunciations, for your own linguistic fervor
• 43-across: No one to talk with, all by myself...
• The Acolyte dares to ask: What if the 5-down were cops?
• Among 33-down's other questionable ventures.
• 52-down: H-O-T-T-O-G-O!!!!!