shoot off v.
1. [mid-19C+] to leave quickly (cf. shoot v. (2b)).
2. [mid-19C+] to talk, usu. irresponsibly or indiscriminately; most often in phrs. below.
3. [1920s+] to ejaculate [ext. of shoot v. (1a)].
4. [1960s] to reprimand, to threaten.
5. [1960s+] to lose one’s temper.
[late 19C+] (US) to talk irresponsibly.
[late 19C–1950s] (US) to talk effusively.
1. [1910s–50s] to talk, esp. boastfully.
2. to complain, to make a fuss, to argue.
[1950s–60s] to talk, esp. arrogantly or boastfully.
1. [mid-19C+] to talk, esp. in a loud or boastful way.
2. [1930s+] (also shoot one’s mouth) to betray secrets.
3. [1960s+] to vomit.
[mid-19C] (Can.) to ask for credit.