Either that she is too busy to answer or that she is ignoring you.
If you hear a sound after picking up your phone, it could be feedback caused by the phone's proximity sensor or electronic interference. It is a common occurrence in electronic devices and usually not a cause for concern.
It means, "My friend pays [is paying, picking up] the bill [tab]."
It sounds like he's being sarcastic.
By picking up the telephone and dialing his phone number.
If you are on (private) school grounds without permission technically your are trespassing. However most schools allow people on the grounds when picking up students.
picking up my hose
Maybe they like each other.
Either as a verb "I pick up", or as a noun, the act of picking up.
If someone phones you, you should answer first.. By picking up the phone and saying " hello ".
When you don't feel like picking up the phone anymore to tell them something important.
I assume that you mean picking up on the phone, in that case if they are intoxicated then they may not realize you are calling them in the first place, or that since they are drunk they may be sleeping it off. Dontworry for a day or so, try calling them when they are sober.
No, picking up a boulder is not the same as picking up a pebble. A boulder is much larger and heavier than a pebble, so it requires more strength and effort to lift. Additionally, the size and weight difference mean that the impact on your body is also greater when lifting a boulder compared to a pebble.