I looked at the slip; on it was what seemed to be an IP Address for my MUD at home!

我一看，那张粉红色纸条上写的是家里的我的MUD的IP地址！

youdao

Anti-slip foot cap: When walking on muddy road or snow-covered road, using mud pad and different foot caps can prevent sinking and slip.

防滑脚套：在泥路和积雪路面行走，套上泥托和更换不同的脚套，起到防止下陷和防滑的作用。

youdao

If you slip in a mud puddle, destroying your iPhone (along with any locally stored encryption keys) and forgetting your passwords as a result of the bump on the head, can you still recover your data?

FORBES: Is Apple's iMessage Service Really Uncrackable By Law Enforcement?