why do boys like to suck eachother at sleepovers

It seems like you might be referring to exploration of physical affection or curiosity that can occur during sleepovers among friends. It's important to understand that during adolescence, individuals can explore their identities and relationships, which can include various forms of physical affection or experimentation. This can be influenced by various factors including peer dynamics, comfort levels, and curiosity about sexuality. It's essential to approach such topics with sensitivity and to consider that everyone has different boundaries and comfort levels. Open and honest communication, as well as mutual respect, are key in any relationship. If you’re seeking more focused advice or understanding about any specific situation, feel free to elaborate!