suck hind tit

arse over tit

Tumbling; falling; upside-down, unstable or unbalanced.

hind tit

An inferior source of food or other resources.

stand up on one's hind legs

To act boldly; to take responsibility.

suck a big one

To be terrible; to be of a very low standard.

suck a lemon

To be in a sour or negative mood.

suck and blow

To perform two incompatible actions; to hold views which are in contradiction.

suck donkey balls

To be terrible, of extremely poor quality.

suck down

To drink (or, more rarely, eat) all of something quickly.