Fucking without a condom and pulling out before you cum is also extremely unsafe as both semen and pre-cum can carry HIV and the virus can easily enter the bloodstream through the membranes lining the anal canal.

• 不带套就提枪上阵，就算不射也是极端危险的，因为精液和前列腺液都可能携带HIV，病毒要穿透菊花内部的表皮细胞简直轻而易举。