Andrew James Grant was just months away from becoming a dad when he hid behind trees alongside Sydney's popular Bay Run and flashed female joggers while asking them for sex.

Grant's business was failing, his finances were dire and he resented the joggers' "privileged lifestyles", Central Local Court heard.

Andrew Grant was arrested after a police hunt for a man with "prominent front teeth". Credit:NSW Police

"He essentially went into self-destruction mode," Grant's lawyer, Joseph Nashed, said on Wednesday when his 29-year-old client was jailed for at least eight months.

After multiple incidents, NSW Police started hunting for a man they said had "prominent front teeth". He approached one woman back in February 2016 and six others in January and February 2018.