For a man/woman to perform oral sex on a man until he comes.

Got the covid-19 vaccine

For a person to lick/suck the genitals of a person of the opposite sex or even same sex if they are homosexual until that person ejaculates.

a blow job : sucking a penis

1. To suck dicks till you faint from exhaustion or swallow so much cum that you throw up.
2. To suck someones dick till they cum in your mouth.

A person who often sucks up to people in such a convincing fashion that he often convinces them that he is actually sincere with his flattery, so much so that the suckee metaphorically creams in his mouth. Like a suck up, but worse.

The act in which two people engage in a contest during smoking hookah where they suck at the same time until they can suck no longer; The person with the most smoke wins and has "sucked it off"