Jizz is a - particularly colloquial - term for sperm. The term is sometimes used in dirty talk.
Cum is a well-known synonym for sperm. Many gays get turned on by talking about their jizz and cum while fucking. Come to speak. The term is - just as with Snot - something ordinary. Nevertheless, it is true that neither "cum" nor "sperm" are nowadays - especially within the Scene - can really shock.
Jizz can be incorporated into sex in many different ways. Especially "visible cumming", such as with the Cumshot enjoys particular popularity here. After all, this way there can be no doubt that the partner has actually come. Other popular body parts for such "squirting adventures" include the back or the ass.
Some gays and jerk-off lovers even organise parties on a regular basis. These go by the name of "Jack off". The principle: the cum of all participants - as far as possible - is collected in a container and drunk afterwards.
By the way: the colour of the jizz can usually tell you something about the state of health of the man in question. "Healthy" jizz is usually white to clear. If it is found that there are blood residues in the cum, for example, it is urgently necessary to consult a doctor.
Another important aspect that plays an important role, especially with regard to oral sex: the taste! Jizz usually has a slightly nutty-sweet/salty flavour of its own. This can often be influenced by eating certain foods. A well-known classic in this context is pineapple. It is said to make the sperm of many men taste better. Conversely, eating onions and garlic can have the opposite effect.