A condom can protect against
STI while having sex and can help you last longer. It also serves as a
birth control but it is recommended to use another birth control in addition in case a condom breaks. Additional lubricant may be necessary to avoid breaking a condom. Some condoms are a bit
thicker, which can improve security and stamina. If you have a casual partner, condoms can also be used for a blowjob to prevent STI. Usually condoms are already
lubricated but there are condoms without lubricant in case the girl does not like lubricant for a blowjob. If you want to have a threesome but don't have female condoms, it is recommended to use one condom for each girl, to avoid sharing an STI between the 2 girls.