Two teenagers appeared in court charged with obstructing a police constable as they tried to arrest their friend.
Both 19-year-old Charlie Smith of Bramblewood Close, Grantham, and 18-year-old Curtis Plant of Vine Street, Billingborough, admitted committing the offence at New Beacon Road, Grantham, on December 12.
At 9.45pm officers were called to the scene to arrest another male but the two defendants kept standing in the way.
Smith and Plant were pushed away and told to leave, but the latter remained in close proximity while Smith was described as aggressive and abusive. They continued to intervene and were both arrested as a result.
During their interviews both men made full admissions, and added that they were were under the influence of alcohol.
Magistrates were informed that Plant was subject to a conditional discharge imposed on December 8 for shop thefts.
Smith was represented by Jane Bauer, who said her client fully accepted the account given by the prosecution and said alcohol had affected his judgement.
Representing himself, Plant said he had been trying to calm his mate down.
His conditional discharge was extended to 18 months and he must pay £85 in prosecution costs and a £15 victim surcharge.
Smith must pay the same and is now subject to a conditional discharge of six months.