anlullen

From an- +‎ lullen. The original sense of the latter is “to mumble, sing in a low voice”, but there are many derived senses including “to chat” and “to suck”, compare Lulle (“cigarette”). Compare also Dutch lullen.

anlullen (weak, third-person singular present lullt an, past tense lullte an, past participle angelullt, auxiliary haben)

1. (colloquial, regional) to wet something with one's saliva, e.g. a bottle or cigarette, or a bone (by a dog)
2. (colloquial, regional) to talk to someone, especially lengthily, in a way that bores or annoys them