To indirectly make a request of a person by verbally talking about what you need from them without directly asking them. Asking for a friend is a common obvious way of dry asking but often times dry asking is not as obvious. Often manipulative and rude. Punks, simps, people pleasers, and thirsty members of the opposite sex are easy targets of dry asking.
*The victim and bystander in this scenario is aware that the that the asker is most likely broke before the verbal exchange.
Dry Asker: How much does a Heath bar cost down at the corner store?
Thirsty Victim: I think they are $2.29. Here's 5 bucks.
Informed Bystander to Victim: Don't let them be rude and dry ask you for money like that. They're totally manipulating you.