At a local session the evening used to end with "Jean". And after the chorus that goes "And I love 'er. I love 'er" etc everyone would grunt loudly, suggestively and in a vulgar fashion right on the first beat of the following bar - very funny and very satisfying.

A few South African songs are good for singing your brains out: Senzenina and Nkosi Sikele Afrika.

And for some reason the chorus of "Factory Lad" (with hand actions which can get a little irreverant - especially at "chuck") has always been satisfying:

Turning steel how do you feel
As on the chuck you spin
If you felt like me you'd roll right out
And never roll back in.

Callie