Gagsuck 

To gag on a cock, when one is sucking upon it

The last time i had gagsuck, my throat was left sore and dry

Gagsuck by Phil McCock March 1, 2004

gagfuck 

Making one puke on your cock by the act of fucking them in the mouth very hard until they do so.

I gagfucked your grandmother and when i pulled out my cock was green.

gagfuck by mandudeguy January 18, 2005