The chorus thereof:

Here's one two three jolly lads
All in one mind
We are come a-pace-egging
And I hope you'll prove kind
And I hope you'll prove kind
With your eggs and strong beer
Or we'll come no more pace-egging
Until the next year

Bejaysus, I last "sang" that song (suitably lubricated) in the Buck Inn in Malham on a botany field course at Malham Tarn in 1970!