when you grab the meaty part of someones upper arm like by their bicep and pump it by clenching and unclenching your hand around their arm. This should be used when someone is excited, nervous, turned on, or scared
"omg did you see that hot guy?" (pumping arm)
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug