I’ve only got one pair of hands
Definition 1 of 1
Pro Tip 1/3Time Management
Expresses being overwhelmed and unable to do everything at once due to time constraints. 
When you asked me to babysit on top of my chores, I said I’ve only got one pair of hands.
Pro Tip 2/3Stress Indication
Indicates that the speaker is under stress and cannot take on additional tasks. 
With the phone ringing and the reports due, I murmured, I’ve only got one pair of hands.
Pro Tip 3/3Implicit Refusal
Suggests a polite refusal to additional requests, emphasizing physical limitations. 
When asked to run another errand, I sighed, I’ve only got one pair of hands.