Melted welly

v.

Heard in Sligo and Cavan

To look undesirable to the opposite/same sex after a large amount of alcoholic beverage consumption the night before.

In use

Look at you with the big melted welly face on ya! ah melted welly galore!

Posh English

Do look at you, with that great melted wellington of a countenance!

Same phrase, other counties