•for coffee⪢⪢
The correct use, however, is a third person plural pronoun. For example, "When I meet my school friends for coffee, they are always late."
http://qindex.info/i.php?x=9413
○○○pronoun⪢⪢
"They" is a plural pronoun. For years, people speaking English have used it as a singular pronoun. For example, "I am meeting a friend for coffee and I hope they are not late."
#singular_plural
http://qindex.info/i.php?x=9352
