'low talk', lit. 'beastly talk', is the name in the sutta-texts for the following:
"Talk about kings and robbers, ministers and armies, danger and war, eating and drinking, clothes and dwellings, garlands and scents, relations, chariots, villages and markets, towns and districts, women and heroes, street talks, talks by the well, talk about those departed in days gone by, tittle-tattle, talks about world and sea, about gain and loss" (A.X.69 etc.).
In the commentaries 4 further kinds are enumerated, thus bringing the number to 32, as mostly counted, namely:
talk about sensuous enjoyment,