A word relating to sad emotional drunkenness

I tried googling the word but no success. I recall it was used in a pejorative manner, but it isn't slang, at least in this day and age.

And maybe it even describes a pathetic or morbid rambling of a drunk.

Solution 1:

You're probably thinking of maudlin, which relates to the self-pity often expressed in such situations (or which causes the drinking and drunkenness in the first place).

Self-pityingly or tearfully sentimental: a bout of maudlin self-pity

ODO

OED has a specific definition at sense 2:

Having reached the stage of drunkenness characterized by tearful sentimentality and effusive displays of affection; characteristic of (the behaviour of) someone who has reached this stage.

Solution 2:

The euphemistic phrase "tired and emotional" was popularised by the British satirical magazine Private Eye in the 1960's, when describing the state of the Labour cabinet minister George Brown.

You can read about it here, in Wikipedia

I particularly like the reference to the Parliamentary usage of euphemism (it's unacceptable to accuse a fellow MP of being drunk). Just goes to show how engrained is the British habit of saying one thing to mean another (often something nasty).