something tat works for me,
1. when u feel like coming, grab hold of something, pillow, mattress or anything tat divert ur attention, hold it tight very tight, use all ur arm power. ur small bro urge to cum will reduce. warning! try not to hurt anyone in the process
2. quite harmful to urself, change into another position tat ur small bro feel painful or somehow make it painful, after feeling pain ur small bro will take a while before he cum. Me used to try this a few times, all over an hour of non-stop action. however i do feel it is bad for my small bro.
I tink try option 1 better, can let u last for a few Precious min more.
As for the hijacker, try imagine u fcuking whoever chio bu u fancy lor but remember not to shout out her name. or else may turn out to be a great Disaster (if u r doing with ur gf)