An obligation arising out of considerations of right and wrong. When not giving a head would be considered morally offensive.
Because Ryan had to listen to Jen bitch about her problems all night he knew she would become orally obligated to suck his cock.
by PABLOW FRESHCOBAR February 17, 2019
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Not being able to turn down a kiss after receiving oral sex.
Shit man, she gave me head but I forgot about Oral Obligation.

The thing on every man's mind after receiving head is oral obligation.

My boyfriend is so weird about Oral Obligation, now I make out with him for 20 minutes after Oral on purpose!
by ObviousDailyLingo January 26, 2016
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