The Cunnilingus Gerund

What is the Gerund of Cunnilingus? One who performs cunnilingus is a "cunnilinguist". But to perform Cunnilingus is...what? cunnilinguiling? Cunnilinguising?

Fellatio is fellation. So one may be "fellating". The wikipedia page has a nice Etymology Section:

The English noun fellatio comes from fellātus, which in Latin is the past participle of the verb fellāre, meaning to suck. In fellatio the -us is replaced by the -io, an alternate form of the suffix -ion. The -ion or -io ending is used in English to create nouns from Latin adjectives and indicate a state or action wherein the Latin verb is being, or has been, performed. Further English words have been created based on the same Latin root. A person who performs fellatio upon another may be termed a fellator (or cocksucker, a term which is usually considered obscene). Because of Latin's gender based declension, this word may be restricted by some English speakers to describing a male. The equivalent female term is fellatrix.

However, there is no in-depth (ha, ha) Etymology provided for Cunnilingus and rather we have simply this:

The term comes from an alternative Latin word for the vulva (cunnus) and from the Latin word for tongue (lingua).

Sexism? I think so.

So, what would the Gerund be? "I am presently cunnilinguiling", "I am presently cunnilingusing"?

If you're wondering what brought this up (ha ha) I was writing this:
"pragmatism fellating, Empiricism cunnilinguiling,"

And realized that I don't know what the proper Gerund form of Cunnilingus is.