Just before the 2 angels destroyed Sodom, they asked Lot if he has family members to escape with him. See Bereshis 19
וַיֵּצֵא לוֹט וַיְדַבֵּר אֶל חֲתָנָיו לֹקְחֵי בְנֹתָיו וַיֹּאמֶר קוּמוּ צְּאוּ מִן הַמָּקוֹם הַזֶּה כִּי מַשְׁחִית יְהֹוָה אֶת הָעִיר וַיְהִי כִמְצַחֵק בְּעֵינֵי חֲתָנָיו:
So Lot went forth and spoke to his sons-in-law, the suitors of his daughters, and he said, "Arise, go forth from this place, for the Lord is destroying the city," but he seemed like a comedian in the eyes of his sons-in-law.
So if you picture the situation, you'd probably imagine those sons in law laughing their heads off at the thought that those 2 men (angels) would destroy those whole city just like that..