When a female inadvertently swallows male ejaculate in a way that it "goes down the wrong pipe" and produces a cough.
His spload was so forceful and deep in her throat as she swallowed that she was caught off guard. The tickle in her throat was too much and she produced a cum cough. They both died laughing!!!
When you cough (for up to) days after giving head even if you havn't swallowed, you ate pre- cum. It is still kinda in your throat.
Wow, Becky! I have this slight cough I just can't get rid of! Ever since I gave Josh head! I think Im getting sick. No you dumb fuck, Its CUM COUGH!