(figuratively) not to be lacking in spice, not to be without a certain piquancy, not to lack punch, not to be boring; to be interesting; to be witty; to be surprising; to be a bit rich, to be a bit cheeky

(informal, transitive) to follow (someone) everywhere, to stay close to (someone) all the time, to breathe down someone's neck, to stick to (someone) like glue, like a leech, to dog (someone's) footsteps

(informal, transitive with pour) to be second to none, without equal when it comes to something; to be peerless for something; to do something like no one else

crime doesn't pay

to live to regret it

to be a certainty, to be clear

there's a fine line between... (said of things that are very close to one another, such that one could easily lead to the other)

out of the question! it's out of the question!

to follow in someone's footsteps

(informal, litotes) not to feel too at ease, i.e. to be scared out of one's wits