Wiktionary
suck off
vb. (context slang English) To fellate a man until he ejaculates.
Usage examples of "suck off".
I wanna take one suck off that crack pipe and go (indicating a chest explosion), 'Now I'm happy.
While the goddess was using her, Lady was limpeting herself to Kina so she could suck off power she could use herself.
They suck off the same corporate teat, supporting things like NAFTA—.
They suck off the same corporate teat, supporting things like NAFTA&ndash.
The increasing ferocity of their eom-merce raiders had managed to suck off a dismayingly high proportion of his light carrierswhich had to be what they'd intended, assuming they meant to engage him here.