Yes I vaguely remember Serge and I.
The second verse simple went:

We were sent to school
In the town of Tomsk
Where we continued
To manufacture bombsk

At this distance in time it gets a bit hazy after that, except that the last verse is after stalinization and it ends with them going back to their beautiful bomsk for their exiled leader Trotsk! I'll think hard and see if I can get back any more.

The one I remember much better concerned Gerry Healy of the Socialist Labour League/Workers Revolutionary Party:
To the tune of For All The Saints

For all the Trots who now have been expelled
Who gainst their leader furiously rebelled
And to resign have all now been compelled
By Gerry Healy, by Gerry Healy

We now are few who once were lots and lots
Such is the fate of little groups of Trots
But never mind we'll beat up Roger Protz
Says Gerry Healy, says Gerry Healy

Though we're adept at putting in the boot
Still Workers Press is losing tons of loot
I think it's time we kidnapped comrade Foot
Says Gerry Healy, says Gerry Healey

The situation now is very glum
The revolution it will never come
Till we have stuck an icepick in the bum
Of Gerry Healy, of Gerry Healy

For the uninitiated Healy was notorious for expelling any dissidents in his party. A friend of mine who had been in the SLL swears he sent a letter to the party taking issue with Healy over some minor point about economics he had made in a speech and concluded 'I enclose an sae for notice of my expulsion. Roger Pritz and Paul Foot were well known members of International Socialism/Socialist Workers Party