Formal:
* சாப்பிடப் போறேன் (saappiṭa pōṟēn): This means "I am going to eat" and is a general way to say you are going for a meal.
* நான் மதிய உணவுக்குப் போறேன் (nān matiya uṇavukkup pōṟēn): This literally means "I am going for lunch."
Informal:
* சாப்பிடப் போறேன் (saappiṭa pōṟēn): This is still the most common way to say you are going for a meal, even if it's just lunch.
* சாப்பிடப் போயிட்டு வர்றேன் (saappiṭa pōyittu varṟēn): This means "I am going to eat and come back" and is more informal.
With friends:
* சாப்பிடப் போறோம் (saappiṭa pōṟōm): This means "we are going to eat" and is a way to say you are going to lunch with friends.
Adding details:
You can also add details to these phrases, such as:
* நான் வெளியில சாப்பிடப் போறேன் (nān veḷiyila saappiṭa pōṟēn): This means "I am going to eat out."
* நான் சாப்பிடப் போய் ஒரு மணி நேரத்துல வந்துருவேன் (nān saappiṭa pōy oru maṇi nērattula vanthuruvēn): This means "I am going to eat and will be back in one hour."
Remember that the most appropriate phrase will depend on the context and your relationship with the person you are talking to.