When another person (more commonly a boy) breast feeds, licks the nipples, or sucks the nipple of a girl when hooking up.
Compared to motorboating, but less vigorous and slightly sketchy. This unusual and definitely not necessary form of 2.5 base is performed in more of a baby to mother fashion instead of between two people of closer age who are sexuality attracted to each other.
pete - omg isabel your tits are so nice
isabel - haha thanks...
pete - ill give them my own special treatment
1 - did you hear about pete and isabel
2 - yea i heard he was peteying her and she got creeped out and dumped him