Wiktionary
twosies
n. A call in any children's game, such as jacks, where two actions must be performed.
Usage examples of "twosies".
No onesies and twosies, but ten Suburbans with federal SWAT troops, helicopters, dogs, tanks-Tanks.
Survivors got out there in the weeds in onesies and twosies and did unto Chuck what Chuck was trying to do unto them.