Such individuals may resort to nonsensical excuses that do not justify why he or she doesn't want to do something (such as go to the movies) that may potentially cost money.
He or she may also simply carry credit cards on a night out when they know the activities during the night will cost actual cash and not plastic. This is to avoid paying for their share and being able to fall back on, "I only have my card." They will sometimes ask you to spot them and they'll pay you back later, but you know that won't happen.
A simple solution to prevent from being seen as a cheapass is to merely say, "hey man, I really don't have the money right now, do you mind if we do something else?" Being honest is something that people will respect. Also, cheapasses generally think they're clever with their words and that nobody is figuring out that it's because they don't have any money (or don't want to spend it). However, people can usually detect when somebody is being a cheapass and tend to make fun of said person behind their back because it's annoying that they won't just be honest.
Another solution to prevent from being a cheapass is to always make sure you pay money back to people you owe it to. Nothing is worse than when somebody owes you money and they continue to not pay you back and give you excuse after excuse as to ...
Sylvia: YOU CHEAPASS!!!
Example; Invited to a dinner, eats more than their share and don't mind going back and taking the last serving or ask if they can take the rest home with them.
Staying with someone for a few days or weeks. Use the Hosts toiletries when they have their own.
Comes up with a cock-mania story about their vehicle and ask to use yours. Burns out the gas and does NOT replace it.
When you finally see you are being taken advantage of, you stop making things available for them. Then they start calling you a "tight ass".