Shift

v.

Heard in Mayo, Wexford, Longford, Tipperary, Clare, Sligo, Cork, Limerick, Waterford, Laois and Kilkenny

To engage in an extended, passionate bout of kissing.

In use

I shifted a fine young wan down at the disco last night!

Posh English

I thoroughly French kissed an attractive lady at the dance last night.

Same phrase, other counties